This book compiles original and review advances from a number of different focuses and latest developments in the important field of plant biology/science from around the world. The publication will be a beneficial and valuable resource for many people and groups related to plant growth and development as well as teachers, researchers, commercial growers and advanced students of plant biological science. The proposed publication can be used in some interesting and unusual places such as biofuels, edible vaccine, phytoremediation and cosmetics.

Plant biotechnology applies to three major areas of plants and their uses: (1) control of plant growth and development; (2) protection of plants against biotic and abiotic stresses; and (3) expansion of ways by which specialty foods, biochemicals, and pharmaceuticals are produced. The topic of recent advances in plant biotechnology is ripe for consideration because of the rapid developments in this ?eld that have revolutionized our concepts of sustainable food production, cost-effective alt- native energy strategies, environmental bioremediation, and production of pla- derived medicines through plant cell biotechnology. Many of the more traditional approaches to plant biotechnology are woefully out of date and even obsolete. Fresh approaches are therefore required. To this end, we have brought together a group of contributors who address the most recent advances in plant biotechnology and what they mean for human progress, and hopefully, a more sustainable future. Achievements today in plant biotechnology have already surpassed all previous expectations. These are based on promising accomplishments in the last several decades and the fact that plant biotechnology has emerged as an exciting area of research by creating unprecedented opportunities for the manipulation of biological systems. In connection with its recent advances, plant biotechnology now allows for the transfer of a greater variety of genetic information in a more precise, controlled manner. The potential for improving plant productivity and its proper use in agric- ture relies largely on newly developed DNA biotechnology and molecular markers.

The world population has increased dramatically in the past century, generating a concern for progressive and sustainable food production. It is expected to further increase by 1.3 billion in 2030 and by 2.5 billion in 2050, reaching 9.7 billion. To provide food security to this growing population, the world food production may need to increase by 60-110%. Biotic and abiotic stresses are major threat to plant growth and halt them from reaching their full genetic potential and ultimately limiting their productivity. High yield varieties are confronted by various stresses which lead to huge loss in production and productivity. Understanding the mechanisms involved in the response of plants to adverse environmental conditions is the first step in the generation of crops with higher tolerance to these stresses. This book provides a broad overview of biotic and abiotic stresses, their mechanisms and different strategies to improve stress tolerance in crop plants.

recruitment of adult plants in entire communities, and all of them focus on changes in total densities of A central issue of plant ecology is the understanding individuals and do not refer to changes in community of the relative role of different life history stages in structure (Moles and Drake 1999; Rebollo et al. successful plant recruitment. The consecutive stages 2001; Goldberg et al. 2001). This ?eld of research of seed, seedling, and adult are related to each other has hardly been explored empirically, and we think it in a complex way that largely depends on species and may reveal interesting mechanisms for the regulation the in?uence of physical and biological factors of individual density and species diversity in plant (Goldberg et al. 2001), for example, irrigation and communities. At the functional group level (which grazing. As a result of relationships between these sorts species according to common features), we stages, the consequences of an ecological factor expect differences depending on growth form depend on the way that its effects propagate onto the (grasses versus forbs) and depending on seed mass following stage of the recruitment process. As far as (differences between small-seeded, medium-seeded, we know, there are no published studies that have and large-seeded species). Some authors (Goldberg addressed this subject. et al. 2001; Rebollo et al. 2001) studying annual In this article, we characterize the relationships plant communities have found greater seedling between the three plant developmental stages.

As in previous volumes, readers will find a multidisciplinary forum for communicating knowledge related to the botany, horticulture, and pharmacology of herbs, spices, and medicinal plants. While magical and mystical powers have been associated with these plants through the ages, continued investigations in such areas as production, nomenclature, uses, chemical constitution, and dynamics help elucidate the affiliated chemical and physical processes that contribute to their unique flavor, fragrance, pharmacological, and other bioactive properties. This collection of articles examines the potential of natural products as pesticides, the richness of the Chinese Pharmacopeia, the similarities of Eastern Asian and Eastern North American medicinal plants, the use of borage as a source of gamma linolenic acid, and the botanical nomenclature of medicinal plants.