中国水稻科学2013，Vol.27Issue(1)：71-76,6.DOI:10.3969/j.issn.1001-7216.2013.01.010
水稻灌浆期高温对天冬氨酸代谢酶活性及其家族氨基酸含量的影响
Effect of High Temperature on Aspartate Metabolism Enzyme Activities and Aspartate-family Amino Acids Contents at Rice Grain-filling Stage
摘要
Abstract
The effect of high temperature(HT) on aspartate aminotransferase( AAT), aspartokinase(AK) activities and the contents of Asp-family amino acids and protein components in grains were measured at rice grain filling stage with japonica rice variety Koshihikari and indica rice variety 1R72 as materials. The results indicated that the activities of AAT and AK and the relative contents of Asp, Lys, Thr, Met and He in grains significantly increased under HT, and AAT and AK activities were significantly positively correlated with Asp-family amino acids contents, suggesting that AAT and AK in rice grains may play an important role in the increase of Asp-family amino acids contents in grains under HT. Additionally, the results indicated that HT during grain filling contributed to the increase of relative contents of protein components and Asp-family amino acids contents, the accumulation of glutelin and Asp-family amino acids, and the improvement of the ratio of part of Asp-family amino acids contents in crude protein. However, the contents of protein components and part of Asp-family amino acids in spikelet decreased under HT during rice grain filling.关键词
高温/天冬氨酸转氨酶/天冬氨酸激酶/天冬氨酸族氨基酸/蛋白质组分Key words
high temperature/ aspartate aminotransferase/ aspartokinase/ Asp-family amino acids/ protein components分类
农业科技引用本文复制引用
梁成刚,张青,李敬,熊丹,许光利,汪燕,刘泉,黄鹏,李天..水稻灌浆期高温对天冬氨酸代谢酶活性及其家族氨基酸含量的影响[J].中国水稻科学,2013,27(1):71-76,6.基金项目
四川省国际科技合作与交流研究计划资助项目(2010HH0015) （2010HH0015）
四川省科技计划资助项目(2009ZR0109) （2009ZR0109）
四川农业大学大学生科研兴趣培养计划资助项目. （）
