An arsenate tolerance gene on chromosome 6 of rice
An arsenate tolerance gene on chromosome 6 of rice
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DOI：
10.1111/j.1469-8137.2004.01109.x
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发表时间：
2004-07-01
期刊：
影响因子：
9.4
通讯作者：
Price, AH
中科院分区：
文献类型：
--
作者：
Dasgupta, T;Hossain, SA;Price, AH
植物耐砷性的遗传学尚未得到广泛研究，也没有耐砷基因的遗传作图。筛选20个不同基因型的水稻在13.3 m砷酸盐中根系生长减少，鉴定出耐受性的显着差异。对108个重组自交系的巴拉× Azucena作图群体的筛选结果表明，在第6染色体上的标记RZ 516和RG 213之间存在一个主效基因AsTol，该基因是一个很好的鉴定目标。它应该证明有价值的调查背后的植物耐砷的生理和分子机制，并可能导致战略，旨在砷污染地区的育种。
The genetics of arsenic tolerance in plants has not been extensively studied and no arsenic tolerance gene has been genetically mapped.Screening 20 diverse genotypes of rice for reduced root growth in 13.3 m arsenate identified marked differences in tolerance. The most sensitive variety, Dawn, is known to be highly susceptible to straighthead, a condition linked to arsenic contamination of soil.Screening 108 recombinant inbred lines of the Bala x Azucena mapping population revealed the presence of a major gene, AsTol, which mapped between markers RZ516 and RG213 on chromosome 6.This gene is a good target for further characterisation. It should prove valuable for investigations into the physiological and molecular mechanism behind arsenic tolerance in plants and may lead to strategies aimed at breeding for arsenic contaminated regions.