Advances in Agronomy continues to be recognized as a leading reference and first-rate source for the latest research in agronomy. Each volume contains an eclectic group of reviews by leading scientists throughout the world. As always, the subjects covered are rich, varied, and exemplary of the abundant subject matter addressed by this long-running serial.

White biotechnology, or industrial biotechnology as it is also known, refers to the use of living cells and/or their enzymes to create industrial products that are more easily degradable, require less energy, create less waste during production and sometimes perform better than products created using traditional chemical processes. Over the last decade considerable progress has been made in white biotechnology research, and further major scientific and technological breakthroughs are expected in the future. Fungi are ubiquitous in nature and have been sorted out from different habitats, including extreme environments (high temperature, low temperature, salinity and pH), and may be associated with plants (epiphytic, endophytic and rhizospheric). The fungal strains are beneficial as well as harmful for human beings. The beneficial fungal strains may play important roles in the agricultural, industrial, and medical sectors. The fungal strains and their products (enzymes, bioactive compounds, and secondary metabolites) are very useful for industry (e.g., the discovery of penicillin from Penicillium chrysogenum). This discovery was a milestone in the development of white biotechnology as the industrial production of penicillin and antibiotics using fungi moved industrial biotechnology into the modern era, transforming it into a global industrial technology. Since then, white biotechnology has steadily developed and now plays a key role in several industrial sectors, providing both high value nutraceutical and pharmaceutical products. The fungal strains and bioactive compounds also play an important role in environmental cleaning. This volume covers the latest developments and research in white biotechnology with a focus on diversity and enzymes.

’n Regstreekse, voor die hand liggende en effektiewe gids tot boom-identifikasie.

Dié boek se titel sê dit alles! Hierdie bygewerkte tweede uitgawe verskaf ’n duidelike uiteensetting van hoe bome saamgestel is en waarna om op te let wanneer ’n boom geïdentifiseer word. Die boek bestaan uit twee dele:

- Deel 1 beskryf en illustreer duidelik die verskillende dele van ’n boom en hul rol in boomidentifikasie.

- Deel 2 bevat ’n sleutel tot 43 boomgroepe, gebaseer op maklik waarneembare stingel- en blaarkenmerke. Dit gee ’n duidelike oorsig van elke groep, sowel as die Suider-Afrikaanse boomfamilies wat in die onderskeie groepe verteenwoordig word. Talle kleurfoto’s en verduidelikende illustrasies ondersteun die teks wat dié handleiding toeganklik en gebruikersvriendelik maak.

Identifiseer die Bome van Suider-Afrika sal lesers toerus met ’n goeie begrip van die bou van bome en waarna hulle moet oplet om dit korrek te kan identifiseer.

Also available in English as How to Identify Trees in Southern Africa .

Rock surfaces provide a challenging habitat for a broad diversity of micro- or small-sized organisms. They interact with each other forming complex communities as well with their substrate causing biodeterioration of rock. Extreme fluctuation in light, temperature and hydration are the main factors that determine the rock surface habitats. The habitat includes epilithic organisms which thrive on the surface without penetrating the rock, endolithic organisms which live just beneath the surface using a thin layer of the rock surface for protection against adverse conditions of the environment (e.g. light protection, storage of water) and chasmo-endolithic organisms which use fractures of the rock surface for a more habitable environment. The book will provide an overview of the various organismal groups, from prokaryotes to vascular plants and arthropods, as well as survey organism-mediated interactions with the rock surface. The latter include biogenic weathering (biogeochemistry, state-of-the art imaging methods), photosynthesis and nitrogen fixation at and inside the rock surface.

This book systematically discusses the vegetation dynamics in northern China since the LGM, with a focus on three dominant tree species (Pinus, Quercus and Betula). By integrating methods of palaeoecology, phylogeography and species distribution model, it reconstructs the glacial refugia in northern China, demonstrating that the species were located further north than previously assumed during the LGM. The postglacial dynamics of forest distribution included not only long-distance north-south migration but also local spread from LGM micro-refugia in northern China. On the regional scale, the book shows the altitudinal migration pattern of the three dominant tree genera and the role of topographical factors in the migration of the forest-steppe border. On the catchment scale, it analyzes Huangqihai Lake, located in the forest-steppe ecotone in northern China, to indentify the local forest dynamics response to the Holocene climatic change. It shows that local forests have various modes of response to the climate drying, including shrubland expansion, savannification and replacement of steppe. In brief, these studies at different space-time scales illustrate the effects of climate, topography and other factors on forest migration.

This fourth edition provides new and updated protocols on plant cell, tissue, and organ cultures. Chapters are divided into five parts that cover topics from general methodologies, statistical analysis and contamination control, highly specialized techniques, and laborious process of measuring the epigenetics changes in tissue cultures. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Plant Cell Culture Protocols, Fourth Edition aims to serve both professionals and novices with its guide to the most common and applicable techniques and methods for plant tissue and cell culture.