Reduction of antinutritional glucosinolates in Brassica oilseeds by mutation of genes encoding transporters
Reduction of antinutritional glucosinolates in Brassica oilseeds by mutation of genes encoding transporters
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DOI：
10.1038/nbt.3823
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发表时间：
2017-04-01
影响因子：
46.9
通讯作者：
Halkier, Barbara Ann
中科院分区：
文献类型：
--
作者：
Nour-Eldin, Hussam Hassan;Madsen, Svend Roesen;Halkier, Barbara Ann
The nutritional value of Brassica seed meals is reduced by the presence of glucosinolates, which are toxic compounds involved in plant defense1. Mutation of the genes encoding two glucosinolate transporters (GTRs) eliminated glucosinolates from Arabidopsis thaliana seeds2, but translation of loss-of-function phenotypes into Brassica crops is challenging because Brassica is polyploid. We mutated one of seven and four of 12 GTR orthologs and reduced glucosinolate levels in seeds by 60-70% in two different Brassica species (Brassica rapa and Brassica juncea). Reduction in seed glucosinolates was stably inherited over multiple generations and maintained in field trials of two mutant populations at three locations. Successful translation of the gtr loss-of-function phenotype from model plant to two Brassica crops suggests that our transport engineering approach could be broadly applied to reduce seed glucosinolate content in other oilseed crops, such as Camelina sativa or Crambe abyssinica.
