A Ser-Gly substitution in plastid-encoded photosystem II D1 protein is responsible for atrazine resistance in foxtail millet (Setaria italica)
文献类型: 外文期刊
第一作者: Jia, Xiaoping
作者: Jia, Xiaoping;Yuan, Jincheng;Shi, Yunsu;Song, Yancun;Wang, Guoying;Wang, Tianyu;Li, Yu
作者机构:
关键词: atrazine resistance;chloroplastic inheritance;foxtail millet (Setaria italica);psbA;phylogenetics;INHIBITING HERBICIDES;CHLOROPLAST MEMBRANES;BASAL ANGIOSPERMS;MOLECULAR-BASIS;PSBA-GENES;PHYLOGENY;MUTATION;SEQUENCES;SUBUNIT;CHLAMYDOMONAS
期刊名称:PLANT GROWTH REGULATION ( 影响因子:3.412; 五年影响因子:3.691 )
ISSN:
年卷期:
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收录情况: SCI
摘要: A foxtail millet (Setaria italica L. Beauv.) line resistant to atrazine was obtained through interspecific hybridization between wild S. viridis L. Beauv. and cultivated S. italica. The resistance was proved to be controlled by a chloroplast-inherited gene and it has further been utilized in foxtail millet production. However, the sequence information of the putative atrazine resistance gene, psbA in foxtail millet's chloroplast genome encoding photosystem II D1 protein (32 kDa thylakoid membrane protein) (photosystem Q(B) protein) and the mutation site responsible for the resistance are not known. In this paper the psbA sequences of six atrazine susceptible/resistant foxtail millet varieties were obtained and compared. The results indicated that there was only one amino acid difference between susceptible and resistance gene, resulting from a single base substitution. It was concluded that a mutant allele of photosystem II protein D1 encoding a Gly residue instead of a Ser residue at position 264 is a major gene of resistance to atrazine. Moreover, the phylogenetic tree based on the psbA coding region of thirty-five plant species was carried out. The phylogenetic relationship between S. italica and other plants and the related evolutionary issues were discussed and it was suggested that psbA sequences could be used in phylogenetic studies in plants.
分类号: S
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