Molecular Genetic Approaches To The Study Of Aluminum Tolerance And Toxicity In Wheat And Rye
Download Molecular Genetic Approaches To The Study Of Aluminum Tolerance And Toxicity In Wheat And Rye full books in PDF, epub, and Kindle. Read online free Molecular Genetic Approaches To The Study Of Aluminum Tolerance And Toxicity In Wheat And Rye ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : Jurandir Vieira Magalhaes |
Publisher | : |
Total Pages | : 422 |
Release | : 2002 |
Genre | : |
ISBN | : |
Aluminum (Al) toxicity is one of the major constraints for agriculture on acid soils, which occupy large regions of the word's agricultural area. At the low pH values associated with these soils (pH 4 -5). Al+3 is solubilized into the soil solution and is toxic to plants, dramatically inhibiting root growth and crop yield. Plant breeding approaches have been used to develop Al tolerant crop genotypes for over 50 years. In order to further improve crop Al tolerance, researchers are now investigating the molecular and physiological mechanisms underlying crop Al tolerance, with the ultimate goal of isolating major Al tolerance genes. Sorghum is an important cereal crop species that exhibits extraordinary levels of tolerance to abiotic stresses such as Al toxicity and drought. Yet, almost nothing is known about the genetics and physiology of sorghum Al tolerance, hence this was the focus of the thesis research described here. A detailed molecular genetic characterization of the mechanisms of Al tolerance in sorghum was conducted in two sources of sorghum Al tolerance, SC283 and SC566. SC283 was found to harbor a single major Al tolerance gene (Alt sb), which exhibited partial dominance in this study. Alt sb was subsequently mapped to a chromosomal location that was apparently not conserved in relation to the location of known Al tolerance genes in wheat and barley. Additional studies indicated that Al tolerance in SC566 is also controlled by the Alt sb gene. The results are discussed with regards to the possible conservation of Al tolerance genes across species in the Poaceae. The physiological studies of Al tolerance were performed with Al tolerant (ATF10B) and sensitive (ATF8B) near isogenic lines derived from SC283. These studies suggested that Alt sb encodes a tolerance mechanism that acts by excluding Al from sensitive sites in the root tip via and Al-activated root citrate exudation. Al tolerance in ATF10B appears to be inducible by Al, in that Al tolerance increased as the roots were exposed to Al for longer time periods. The thesis is concluded with a description of future research that will focus on the isolation of Alt sb by positional cloning.
Author | : Paul Andrew Mason |
Publisher | : |
Total Pages | : 320 |
Release | : 2005 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 652 |
Release | : 2003 |
Genre | : Dissertations, Academic |
ISBN | : |
Author | : Divya Chandran |
Publisher | : |
Total Pages | : 374 |
Release | : 2006 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 776 |
Release | : 2002 |
Genre | : Dissertation abstracts |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1390 |
Release | : 1995 |
Genre | : Agriculture |
ISBN | : |
Author | : Ram J. Singh |
Publisher | : CRC Press |
Total Pages | : 457 |
Release | : 2006-01-13 |
Genre | : Science |
ISBN | : 0203489268 |
Summarizing landmark research, Volume 2 of this essential series furnishes information on the availability of germplasm resources that breeders can exploit for producing high-yielding cereal crop varieties. Written by leading international experts, this volume offers the most comprehensive and up-to-date information on employing genetic resources t
Author | : Antonio Costa de Oliveira |
Publisher | : Springer Science & Business Media |
Total Pages | : 328 |
Release | : 2010-12-03 |
Genre | : Science |
ISBN | : 3540855467 |
With the predicted increase of the human population and the subsequent need for larger food supplies, root health in crop plants could play a major role in providing sustainable highly productive crops that can cope with global climate changes. While the essentiality of roots and their relation to plant performance is broadly recognized, less is known about their role in plant growth and development. “Root Genomics” examines how various new genomic technologies are rapidly being applied to the study of roots, including high-throughput sequencing and genotyping, TILLING, transcription factor analysis, comparative genomics, gene discovery and transcriptional profiling, post-transcriptional events regulating microRNAs, proteome profiling and the use of molecular markers such as SSRs, DArTs, and SNPs for QTL analyses and the identification of superior genes/alleles. The book also covers topics such as the molecular breeding of crops in problematic soils and the responses of roots to a variety of stresses.
Author | : |
Publisher | : |
Total Pages | : 1276 |
Release | : 1978 |
Genre | : Agriculture |
ISBN | : |
Author | : Fred Adams |
Publisher | : |
Total Pages | : 400 |
Release | : 1984 |
Genre | : Technology & Engineering |
ISBN | : |
The chemistry of acidity. Physiological effects of hydrogen, aluminum, and managanese toxicities in acid soil. Physiological aspects of calcium, magnesium, and molybdenum deficiencies in plants. Liming materials and practices. Crop response to lime in the southern united states. Crop response to lime in the midwestern united states. Crop response to lime in the northeastern united states. Crop response to lime in the wested states. Crop response to lime on soils in the tropics. Glossary-common and scientific names of crops referred to in this monograph.