Leaf morphological and ultrastructural performance of eggplant (Solanum melongena L.) in response to water stress
Leaf morphological and ultrastructural performance of eggplant (Solanum melongena L.) in response to water stress
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DOI：
10.1007/s11099-013-0005-6
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发表时间：
2013-03-01
期刊：
影响因子：
2.7
通讯作者：
Guo, Y. -D.
中科院分区：
文献类型：
--
作者：
Fu, Q. S.;Yang, R. C.;Guo, Y. -D.
以茄子（SolanummelongenaL.）为试材，研究了水分胁迫对茄子叶片表面形态（气孔密度、大小、近轴面和远轴面毛状体密度）和叶片超微结构（叶绿体、线粒体和细胞核）的影响。在本研究中进行了调查。叶片下轴面气孔密度和毛状体密度高于上轴面。水分胁迫下，与正常供水相比，叶片下轴面气孔密度和毛状体密度分别增加了20.39%和26.23%。每个细胞的叶绿体数目减少，叶绿体变圆，膜结构受损，嗜锇颗粒增多，淀粉粒减少。线粒体内嵴崩解。与WW植株相比，细胞核较小，核仁大，聚集在一起。我们的研究结果表明，形态和解剖的反应增强了植物的生存能力和生长在逆境期间。
The effects of water stress on leaf surface morphology (stomatal density, size, and trichome density of both adaxial and abaxial surfaces) and leaf ultrastructure (chloroplasts, mitochondria, and cell nuclei) of eggplant (Solanum melongena L.) were investigated in this study. Higher stomata and trichome densities were observed on abaxial surface compared with the adaxial surface. Compared with well watered (WW) plants, the stomata and trichome density of the abaxial surface increased by 20.39% and 26.23% under water-stress condition, respectively. The number of chloroplasts per cell profile was lesser, the chloroplasts became round in a shape with more damaged structure of membranes, the number of osmiophilic granules increased, and the number of starch grains decreased. The cristae in mitochondria were disintegrated. The cell nuclei were smaller and the agglomerated nucleoli were bigger than those of WW plants. Our results indicated that the morphological and anatomical responses enhanced the capability of plants to survive and grow during stress periods.