eChapters

Introduction

Bioremediation can be defined as elimination, attenuation or transformation of polluting or contaminating substances by the use of biological processes, to minimize the risk to human health and the environment. Bioremediation of contaminated soil and water uses microbes (e.g. bacteria and fungi) to convert pollutants to harmless or more environmentally acceptable products and minimizes the risk to human health in a natural or managed process.

Words like rDNA (recombinant DNA) technology, cloning, genetically modified organism (GMO), living modified organism (LMO) and transgenics are of today’s common knowledge. However rather than scientific interest, debates on biosafety issues have made these terms more agnized among general people. Global, sectorial and individual protests against transgenic plants and animals are enunciated allover the world raising issues and concerns over risks and health hazards of using these organisms. Despite these protests and concerns, commercial use of transgenic organism as food, feed or other purposes are increasing at an exponential rate. Although there is not much scientific evidence where transgenics have caused havocs on ecological balance or human health, the biosafety issues need to be solved to provide a safer environment rather than be sorry and lament in the future for today’s mistakes. One of the major problems in supporting use of GMOs lies in the incapability of biosafety science to draw reliable and widely acceptable conclusions for labeling a safe tag on these organisms and their derivatives.

Introduction
 
Nanotoxicity is a serious concern to be addressed sooner than later as nano-based processes and products in various fields are being extensively exploited. Nanotoxicology is the science of engineered nanodevices and nanostructures that deals with their effects in living organisms (Oberdorster et al., 2005). The unique property of nanoparticles is in its very large surface area to mass ratio, which is considered to be a boon to create novel products. But this distinctive property also challenges the way we identify, understand and address potential risks caused by nanoparticles (Rajkishore et al., 2011). It is sufficient to alert us to the fact that some engineered nanoparticles do indeed behave differently to their more conventional counterparts and may present new and unusual risks. Kahru and Dubourguier (2010) assessed the existing literature on nanotoxicity to main food chain levels (bacteria, algae, crustaceans, ciliates, fish, yeasts and nematodes) and classified the NPs of Ag and ZnO as “extremely toxic”, C60 fullerenes and CuO NP as “very toxic”, SWCNTs and MWCNTs as “toxic” and TiO₂ NP as “harmful”. 

9.1 The Cartagena Protocol on Biosafety: Objectives and Implementation
9.1.1 Introduction
The Cartagena Protocol on Biosafety (CPB) is a pivotal international legal instrument under the Convention on Biological Diversity (CBD), dedicated to regulating the transboundary movement, handling, and use of living modified organisms (LMOs) derived through modern biotechnology that may adversely affect biological diversity, human health, or the environment. Adopted in January 2000 in Cartagena, Colombia, and entering into force on September 11, 2003, the Protocol represents a global consensus on biosafety governance amidst the rapid expansion of genetic engineering technologies.
9.1.2 Objectives of the Cartagena Protocol
The principal objective of the Cartagena Protocol is:
“To contribute to ensuring an adequate level of protection in the field of the safe transfer, handling and use of living modified organisms resulting from modern biotechnology that may have adverse effects on the conservation and sustainable use of biological diversity, taking also into account risks to human health, and specifically focusing on transboundary movements.” (Article 1, CPB)
The core objectives can be summarised as
• Ensuring biosafety in the context of international trade of LMOs.
• Protecting biodiversity from potential risks posed by LMOs.
• Safeguarding human health against unintended exposure to transgenic organisms.

Biotechnology has the potential to revolutionize many aspects in our lives, from healthcare to agriculture. However, along with its benefits, it also poses significant risks to human health, environment, and ecology. Therefore, it is essential to establish biosafety regulations and risk assessment frameworks to promote safe and responsible use of biotechnology. This chapter compiled an overview of biotechnology, the importance of biosafety regulations and risk assessment, IPR protection, contaminants, risk analysis, risk management in laboratories and fields, biosafety concerns to human health, environment and ecology, biosafety at international and national levels, bioethics, and general principles.

Overview of Biotechnology and its Potential Benefits and Risks

Biotechnology refers to the use of living organisms or their components to develop products and processes for various fields such as healthcare, agriculture, and environmental remediation. Biotechnology applications include genetic engineering, bioremediation, biopharmaceuticals, and biobased products.

8.1 Steps in Biosafety Risk Assessment
8.1.1 Introduction
Biosafety Risk Assessment is a systematic, science-based process used to identify, evaluate, and mitigate risks associated with handling biological agents, genetically modified organisms (GMOs), and biotechnological products. It is central to ensuring human safety, environmental integrity, and regulatory compliance in both laboratory and field applications.
A well-conducted biosafety risk assessment enables institutions to establish appropriate biosafety levels, implement containment measures, and ensure sustainable and responsible use of biotechnological advancements.
8.1.2 Key Objectives of Biosafety Risk Assessment
• Prevent exposure of personnel to biohazards.
• Avoid environmental contamination and unintended gene flow.
• Determine containment requirements for biological agents.
• Guide institutional and national biosafety decision-making.
• Support regulatory frameworks and compliance obligations.

13.1 Biosafety

Biosafety is the prevention of large-scale loss of biological integrity, focusing both on ecology and human health. These prevention mechanisms include conduction of regular reviews of the biosafety in laboratory settings, as well as strict guidelines to follow. Biosafety is used to protect from harmful incidents. Many laboratories handling biohazards employ an ongoing risk management assessment and enforcement process for biosafety. Failures to follow such protocols can lead to increased risk of exposure to biohazards or pathogens. Human error and poor technique contribute to unnecessary exposure and compromise the best safeguards set into place for protection. The international Cartagena Protocol on Biosafety deals primarily with the agricultural definition but many advocacy groups seek to expand it to include post-genetic threats: new molecules, artificial life forms, and even robots which may compete directly in the natural food chain.

Introduction

Biosensor technology is a powerful alternative to conventional analytical techniques, harnessing the specificity and sensitivity of biological systems in small, low cost devices. Despite the promising biosensors developed in research laboratories, there are not many reports of applications in agricultural monitoring. The authors review biosensor technology and discuss the different bio-receptor systems and methods of transduction. The difference between a biosensor and a truly integrated biosensor system are defined and the main reasons for the slow technology transfer of biosensors to the market place are reported. Biosensor research and development has been directed mainly towards health care, environmental applications and the food industry. The most commercially important application is the hand-held glucose meter used by diabetics. The agricultural / veterinary testing market has seen a number of diagnostic tests but no true biosensor systems have made an impact.

Biostimulants examines substances and microorganisms that enhance plant physiological processes, growth, development, and tolerance to environmental stress. The chapter distinguishes non-microbial and microbial biostimulants and discusses plant extracts, protein hydrolysates, animal-derived hydrolysates, humic substances, seaweed and macroalgal extracts, and secondary metabolites. Microbial examples include nitrogen-fixing and nutrient-solubilizing organisms, arbuscular mycorrhizal fungi, Trichoderma, Bacillus, Pseudomonas, microalgae, and cyanobacteria. Their implications for germination, metabolism, root development, crop quality, growth promotion, and abiotic-stress tolerance are described. The chapter provides a framework for understanding biostimulants as complementary tools within sustainable crop production and natural farming systems. in modern sustainable crop production for farmers worldwide under diverse agricultural production conditions.

Tissue culture consists of growing plants cells as relatively on organized masses of cells on an agar medium (callus culture) or as a suspension of free cells and small cell masses in a liquid medium (suspension culture). In other words, In plant cell culture, plant tissues and organs are developed in vitro on artificial media, under aseptic and controlled environment. The procedure depends mainly on the concept of totipotentiality of plant cells (Haberlandt, 1902) which refers to the ability of a single cell to express the full genome by cell division.

Introduction
Biotechnology represents a transformative force in modern agriculture, offering innovative solutions to enhance crop production, improve resistance to diseases, and address the global challenges of food security and climate change. Chapter 9 delves into the multifaceted role of biotechnology, particularly in the realm of genetic innovation, and how it is reshaping the agricultural landscape. The chapter begins by exploring the various applications of biotechnology in crop improvement. This includes the development of genetically modified organisms (GMOs) and transgenic crops, which have been engineered to exhibit desirable traits such as increased yield, pest resistance, and enhanced nutritional content. These advancements have significantly contributed to the global food supply, particularly in regions facing harsh climatic conditions or limited agricultural resources. A detailed examination of genomic tools and techniques follows, highlighting the sophisticated methodologies employed in biotechnology. Techniques such as CRISPR -Cas9 gene editing, marker-assisted selection, and genomic sequencing are discussed, showcasing their pivotal role in accelerating the development of improved crop varieties. These tools have enabled scientists to manipulate genetic material with unprecedented precision, paving the way for more efficient and targeted crop breeding programs. The chapter also addresses the role of biotechnology in crop protection, emphasizing its importance in developing crops that are resistant to pests, diseases, and environmental stresses. By enhancing the natural defense mechanisms of plants, biotechnology reduces the need for chemical pesticides, thereby promoting more sustainable agricultural practices and minimizing the environmental impact of farming. The importance of biotechnology and genetic engineering in ensuring food security is a central theme of this chapter. As the global population continues to grow, the demand for food is expected to increase dramatically. Biotechnology offers a viable solution to meet this demand by enabling the production of higheryielding and more resilient crops. This section also explores the ethical and regulatory considerations surrounding the use of GMOs and other biotechnological innovations in agriculture.

3.1 Biowarfare

Biowarfare, also known as Biological warfare or germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war. Biological weapons (often termed “bio-weapons”, “biological threat agents”, or “bio-agents”) are living organisms or replicating entities (like viruses, which are not universally considered “alive”). Entomological (insect) warfare is a subtype of biological warfare.

Offensive biological warfare is prohibited under customary international humanitarian law and several international treaties. 

Bird of Paradise, belonging to the genus Strelitzia, is a distinctive ornamental cut flower recognized for its striking inflorescences and architectural form. This chapter covers its origin, botanical features, species, varieties and commercial importance. It explains environmental requirements, soil conditions, propagation, planting, irrigation, nutrient management and cultural operations. The chapter also addresses pests, diseases, harvesting, grading and postharvest handling. Because of its unique appearance and suitability for floral arrangements, Bird of Paradise has significant potential in premium floriculture markets. The chapter provides practical production guidance for growers seeking to develop high-value tropical cut flower enterprises. commercially and sustainably.

Black gram (Vigna mungo, L. Hepper, 2 n = 2 x = 22, family Leguminosae/ Fabaceae, essentially self-pollinated) has a global production of 3.2 million tons where India is the largest producer accounting for more than 70% of the global production followed by Myanmar and Thailand. Indian black gram area, production and productivity in 2010-11 were 3.25 million ha, 1.76 million tons and 522 kg/ha. The corresponding figures for 2015-16 were 3.62 million ha, 1.95 million tons and 537 kg/ha and the corresponding figures for 2016- 17 were 4.48 million ha, 2.83 million tons and 632 kg/ha. For 2017-18 (IV advance estimate), the figures were 5.44 million ha, 3.56 million tons and 655 kg/ha (Directorate of Pulses Development, 2018). These figures show a steady rise in black gram area, production and productivity over the years. This is the third important pulse crop in India after gram and pigeonpea. The three states namely, Madhya Pradesh, UP and Andhra Pradesh alone account for about 50% of the black gram area and production in India.

Blotting is the procedure through which nucleic acids or proteins are immobilized onto a solid support generally nylon or nitrocellulose membranes. Blotting of nucleic acid is the central technique for labeling and hybridization on membranes have formed the basis for a range of experimental techniques involving understanding of gene expression, organization, etc. More recently the identification of abnormal genes in genomic DNA has become increasingly important in clinical research and genetic counseling. We can identify inherited disease, infectious agent present in the sample by using blotting technique. It is also used to mapping restriction sites in single copy gene.

Maize is a tall, determinate annual C₄ plant varying in height from (1-4) meters producing large, narrow, opposing leaves (about a tenth as wide as they are long), borne alternately along the length of a solid stem. The botanical features of various plant parts are as follows: 

Root

Root system of maize consists of seminal roots, crown or coronal or adventitious or fibrous roots and brace, pop or aerial roots. Seminal roots - which develop from radical and persist for long period. Crown roots developing from the lower nodes of stem below ground level which are the effective and active roots of plant and.  Brace or prop roots, produced by lower two nodes. The roots grow very rapidly and almost equally outwards and downwards. Favorable soils may allow corn root growth up to 60 cm laterally and in depth.

1. Bread Wheat (Triticum aestivum)

Wheat has been traditionally grouped into the genera Triticum in the tribe Tritiaceae of the family Poaceae. Bread wheat, 2n=6x=42 is a hexaploid consisting of three distinct genomic complementary, namely, A, B and D, with the genome structure AABBDD. In the past there were 4 species, viz. Triticum aestivum, T. durum, T. dicoccum and T. sphaerococcum, under cultivation in India. T. sphaerococcum has now practically gone out of cultivation because of its low productivity and high susceptibility to diseases. The major wheat producing countries are China, India, USA, the Russian Federation, and Australia. These five countries together contribute more than half of the global wheat production. In India, Uttar Pradesh has registered the highest production followed by Punjab, Madhya Pradesh, Haryana, Rajasthan and Bihar. These top six states together contributed around 90 per cent of the total wheat production in the country

Floral Biology

The inflorescence of wheat is known as spikelets. Spikelets are alternately arranged on the rachis; each spikelet’s has a small joint axis which bear two to nine flower known as florets. Close to the base of rachilla are two empty boat shaped bracts known as glumes. Above these inserted alternately on opposite side of the rachilla known as lemma. Opposite it’s a thin membrane bracts known as palea enclosed within the lemma and palea are a single pistil and three steamens. The pistil consists of an ovary bearing two short styles each carrying a feathery stigma. At the base of the ovary are two membranous scales known as lodicules. Each stamen consists of a thread like filament carrying a pollen containing anther.

1) Origin and distribution

Pearl millet (Pennisetum americanum (L) Leeke, 2n-14) originated in west Africa from where it was introduced into India. Large variability is still found in Africa. Pearl millet is a dual purpose crop; its grain is used for human consumption and its fodder as cattle feed. It is cultivated mainly in Africa and Asia, primarily as a grain crop in an area of 26 million ha with a production of 13 million tonnes. As a poor man’s bread, it sustains a large population of Africa and Asia. It also contributes to the economy of countries like the U.S.A. where it is grown as a forage crop.

In India, Pennisetum americanum (bajra) is cultivated on 11 to 12 million ha land with a production of about 6 million tonnes. It is grown on marginal lands and in areas of scanty rainfall. Rajasthan, Gujarat, Maharashtra, Uttar Pradesh and Haryana account for about 90 per cent of the total area under this crop.

Introduction

Man’s intervention in the evolution of plants, to adapt them to suit his needs, constitutes the practice of plant breeding. Historically regarded as an art and still too empirical to be accepted universally as a science, it has recently been described as a technology (Riley 1978). Whether art, science or technology, it certainly draws on a wide range of disciplines and embodies all those principles of organisation and management that determine success in any production-oriented programme.

Perhaps the biggest contribution that the plant breeder has made to increased production during the past 50 years has been in helping to alleviate the effects of natural hazards such as lodging, pests and diseases on crop production. While most of this progress has been through the manipulation of biotic stresses, much is still to be achieved under non-biotic stresses such as drought, salinity, temperature, etc. This argument is strengthened by the fact that in spite of the spectacular achievements made possible by the ‘Green Revolution’, the productivity level of most crop plants, including wheat and rice, has remained both low and static under stress conditions. Concerted efforts are needed through an approach of interdisciplinary research, since not much has been done to define criteria for stress assessment and evolving breeding approaches for incorporating stress tolerance in crop plants.

Transgenic crops, developed through genetic engineering techniques, have revolutionized modern agriculture by conferring novel traits that enhance yield, quality, and resilience. This chapter delves into the intricate interplay between the scientific advancements in breeding approaches for transgenic crops and the critical ethical concerns and regulatory frameworks that accompany them. The chapter begins by introducing the concept of transgenic crops and provides an overview of the diverse breeding techniques employed to manipulate plant genomes. These techniques include Agrobacterium mediated transformation, biolistic transformation, CRISPR-Cas9 (clustered regularly interspaced short palindromic repeats–associated protein 9) genome editing, RNA interference (RNAi), and site-specific integration methods. Each method is presented within the context of its potential benefits and limitations. The subsequent sections address the ethical considerations that arise from the creation and deployment of transgenic crops. The potential ecological and biodiversity impacts, cross-contamination risks with conventional crops, and issues related to patenting genetically modified organisms (GMOs) are explored. Furthermore, the chapter examines the ethical implications of genetically modified crops on human and animal health and questions surrounding the monopolization of seed resources. Looking to the future, the chapter outlines emerging breeding technologies and anticipates potential challenges in ethical consideration and regulation.