文献类型： 外文期刊

作者： Wu, Yushan ¹ ; Gong, Wanzhuo ⁴ ; Yang, Wenyu ¹ ;

作者机构： 1.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Sichuan, Peoples R China

2.Minist Agr, Key Lab Crop Ecophysiol & Farming Syst Southwest, Chengdu 611130, Sichuan, Peoples R China

3.Sichuan Engn Res Ctr Crop Strip Intercropping Sys, Chengdu 611130, Sichuan, Peoples R China

4.Chongqing Acad Agr Sci, Characterist Crops Res Inst, Chongqing 402160, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：3.8； 五年影响因子：4.3 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： To gain more insight into the physiological function of shade and how shade affects leaf size, we investigated the growth, leaf anatomical structure, hormones and genes expressions in soybean. Soybean seeds were sown in plastic pots and were allowed to germinate and grow for 30 days under shade or full sunlight conditions. Shade treated plants showed significantly increase on stem length and petiole length, and decrease on stem diameters, shoot biomass and its partition to leaf also were significantly lower than that in full sunlight. Smaller and thinner on shade treated leaves than corresponding leaves on full sunlight plants. The decreased leaf size caused by shade was largely attributable to cell proliferation in young leaves and both cell proliferation and enlargement in old leaves. Shade induced the expression of a set of genes related to cell proliferation and/or enlargement, but depended on the developmental stage of leaf. Shade significantly increased the auxin and gibberellin content, and significantly decreased the cytokinin content in young, middle and old leaves. Taken together, these results indicated that shade inhibited leaf size by controlling cell proliferation and enlargement, auxin, gibberellin and cytokinin may play important roles in this process.