OsAAP6 functions as an important regulator of grain protein content and nutritional quality in rice.
OsAAP6 functions as an important regulator of grain protein content and nutritional quality in rice.
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OsAAP6 作为水稻籽粒蛋白质含量和营养品质的重要调节剂
DOI：
10.1038/ncomms5847
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发表时间：
2014-09-11
影响因子：
16.6
通讯作者：
He, Yuqing
中科院分区：
文献类型：
--
作者：
Peng, Bo;Kong, Huili;Li, Yibo;Wang, Lingqiang;Zhong, Ming;Sun, Liang;Gao, Guanjun;Zhang, Qinglu;Luo, Lijun;Wang, Gongwei;Xie, Weibo;Chen, Junxiao;Yao, Wen;Peng, Yong;Lei, Lei;Lian, Xingmin;Xiao, Jinghua;Xu, Caiguo;Li, Xianghua;He, Yuqing
谷物中的谷物是人类食物中重要的蛋白质来源，而谷物蛋白质含量（GPC）是谷物营养品质的重要决定因素。本研究表明，水稻数量性状位点qpc1通过调节谷氨酸、蛋白、球蛋白、白蛋白和淀粉的合成和积累来控制GPC。qpc1编码一种推定的氨基酸转运体osaap6，其在水稻中作为GPC的正调节因子，因此高表达的osaap6与高GPC相关。osaap6极大地促进了根系对一系列氨基酸的吸收，并对各种氨基酸的分布产生影响。osaap65 ' -未翻译区潜在调控元件的两个常见变异似乎主要与籼稻品种的GPC多样性有关。我们的研究结果是揭开水稻GPC自然变异的调控机制的第一步。
Grains from cereals contribute an important source of protein to human food, and grain protein content (GPC) is an important determinant of nutritional quality in cereals. Here we show that the quantitative trait locus (QTL)qPC1in rice controls GPC by regulating the synthesis and accumulation of glutelins, prolamins, globulins, albumins and starch.qPC1encodes a putative amino acid transporterOsAAP6, which functions as a positive regulator of GPC in rice, such that higher expression ofOsAAP6is correlated with higher GPC.OsAAP6greatly enhances root absorption of a range of amino acids and has effects on the distribution of various amino acids. Two common variations in the potentialcis-regulatory elements of theOsAAP65′-untranslated region seem to be associated with GPC diversity mainly inindicacultivars. Our results represent the first step toward unravelling the mechanism of regulation underlying natural variation of GPC in rice.
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