Photosynthetica 2013, 51(1):109-114 | DOI: 10.1007/s11099-013-0005-6

Leaf morphological and ultrastructural performance of eggplant (Solanum melongena L.) in response to water stress

Q. S. Fu1,2, R. C. Yang1, H. S. Wang2, B. Zhao1, C. L. Zhou1, S. X. Ren3,*, Y. D. Guo1,*
1 Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Agriculture & Biotechnology, China Agricultural University, Beijing, China
2 Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
3 School of Agriculture, Virginia State University, Petersburg, USA

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.

Additional key words: eggplant; stomata; trichome; ultrastructure; water stress

Received: April 30, 2012; Accepted: November 14, 2012; Published: March 1, 2013  Show citation

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Fu, Q.S., Yang, R.C., Wang, H.S., Zhao, B., Zhou, C.L., Ren, S.X., & Guo, Y.D. (2013). Leaf morphological and ultrastructural performance of eggplant (Solanum melongena L.) in response to water stress. Photosynthetica, 51(1), 109-114. doi: 10.1007/s11099-013-0005-6
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