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Over six chapters, this book deals with different aspects of parasitic plants, from generalities to specific case studies. A large part of the book deals with holoparasites that cause damage in agriculture, such as those of the genus Cuscuta. Their biology, forms of management, interaction with hosts as transmitting vectors, and even their phytochemistry and medicinal uses are analyzed. Cases of parasitic plants approached from the cultural relationship with humans are presented for an area of Africa, as well as a review of the biology of the American genus Lophophytum, a holoparasite that is not harmful to agriculture and is even in danger of conservation.
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A new approach to agricultural research and development is needed in order to conserve agricultural diversity, improve crops, and produce food of quality for all. This publication examines this new approach to agricultural research in light of 10 years of support by IDRC for projects promote agricultural biodiversity and participatory plant breeding. It examines key issues in detail, from the research questions, design of on-farm research to farmers' and plant breeders' rights. It argues for the development of new, supportive policies and legislation. A series of project stories illustrates
Plant breeding --- 574.9 --- 63.001.5 <1-773> --- 632.53 --- 574.9 Biogeography in general. Geographical distribution of organisms --- Biogeography in general. Geographical distribution of organisms --- 632.53 Parasitic plants. Epiphytes. Climbing plants --- Parasitic plants. Epiphytes. Climbing plants --- Crops --- Agriculture --- Breeding --- Agricultural research--Gebieden in ontwikkeling. Ontwikkelingslanden --- Plant breeding. --- Field crops --- Agrobiodiversity conservation. --- Conservation of agrobiodiversity --- Agricultural conservation --- Biodiversity conservation --- Breeding.
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The southwestern Australian flora is unique in the world, not only for its biodiversity and endemism, but also for its functional biodiversity. It also contains the world’s most nutrient-impoverished soils, has a prolonged-summer period and the vegetation is extremely fire-prone. These conditions have engendered an array of survival adaptations that have evolved in these harsh conditions across a diverse range of species. It is well recognised that the southwest flora has the toughest and most spiny vegetation of the world, the greatest number of species that store their seeds in woody fruits, and the most specialised means of obtaining limited soil nutrients and water.This book focuses on the survival mechanisms, adaptations and ecology of the unique Southwest Australian flora (restricted here to flowering plants). The book begins with an examination of how the flora has evolved into the present forms. It describes further in detail the adaptive responses of the flora to the main environmental pressures influencing survival - fire, summer drought, nutrient-impoverished soils, pollination and seed dispersal agents. Specialised responses to obtain essential nutrients are presented in three chapters – carnivorous plants, parasitic plants and specialised roots. An entire chapter is devoted to leaves, with an insight into how leaves may assist in protecting flowers and fruits from herbivores and seed-eaters. The book provides an ecological perspective on how the flora has evolved complex strategies to ensure species survival in the relatively harsh seasonal climate of a Mediterranean-type ecosystem.
Botany --- Earth & Environmental Sciences --- Plant Geography --- Plants --- Flora --- Plant kingdom --- Plantae --- Vascular plants --- Vegetable kingdom --- Vegetation --- Wildlife --- Organisms --- seed storage and dispersal --- pollination --- fire-proneness --- evolution --- parasitic plants --- drought responses --- carnivorous plants
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The parasitic lifestyle in plants has always been the subject of curiosity of scientists, but during the last decade, our understanding of parasitic plant–host interactions has greatly evolved due to rapid advances in molecular and genomic tools, especially high throughput DNA sequencing, transcriptomics, and metabolomics. Recent findings taken the science of parasitic plants to a higher level, opening up new horizons in parasitic weed management. The discovery of a novel family of phytohormones, the strigolactones, and their involvement in the host detection and evolution of parasitic plants, the detection of information exchange between host and parasite, and elucidation of the suppression of host defense mechanisms by parasites has led to a deeper understanding of physiological processes in host–parasite interactions. In the light of recent achievements, the re-evaluation of control management, including smart chemical control, crop breeding, and molecular genetics, are on the agenda.
Research & information: general --- Biology, life sciences --- chemigation --- drip irrigation --- Egyptian broomrape --- herbicide --- imazapic --- parasitic plants --- tomato --- weed control --- sunflower (Helianthus annuus) --- broomrape (Orobanche cumana) --- broomrape resistance --- transcriptomics --- GC-MS analysis --- holoparasitic plant --- metabolic changes --- parasitic organs --- parasitic weeds --- Striga --- Orobanche --- Phelipanche --- chickpea --- strigolactone --- chickpea phenotype --- chlorophyll --- carotenoid --- anthocyanin --- Cuscuta --- food chain --- feeding mode --- heavy metal --- holoparasite --- host --- tRNA --- mobile mRNA --- crop safety --- branched broomrape --- imazamox --- sulfosulfuron --- germination stimulant --- isothiocyanates --- structure–activity relationship --- suicidal germination --- Striga hermonthica --- seedbank --- strigolactone analogs --- witch weeds --- methyl phenlactonoate --- Phelipanche aegyptiaca --- glyphosate --- ethametsulfuron-methyl --- chemical control --- n/a --- structure-activity relationship
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This book provides reviews and primary research articles that discuss the replication, repair, maintenance, and structures of plant organelle genomes. Rearrangements of these genomes are common and provide a way to distinguish closely related plant species. Some articles in the book discuss recent advances in identifying specific proteins and potential mechanisms involved in DNA replication, recombination, and repair in plant mitochondria and chloroplasts.
DNA replication --- recombination-dependent replication (RDR) --- plant mitochondrial DNA --- chloroplast DNA --- DNA repair --- divergent inverted repeats --- short-globose cacti --- novel gene rearrangements --- pseudogenization --- sunflower --- cytoplasmic male sterility (CMS) --- mitochondrial genome --- reorganizations --- next generation sequencing (NGS) --- evolution --- replisome --- recombination-dependent replication --- Lilium --- phylogenomics --- plastome --- molecular markers --- gene tree --- species tree --- chloroplast --- mitochondrion --- genome stability --- homologous recombination repair --- repeated sequence --- Physcomitrella patens --- mitochondria --- double-strand break repair --- uracil-N-glycosylase --- Piperales --- Hydnoraceae --- Hydnora --- Prosopanche --- parasitic plants --- holoparasite --- plastid genome --- organelles --- plastid phylogenetics --- DNA recombination --- plant organelle genome structure
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