Biologia plantarum 58:99-104, 2014 | DOI: 10.1007/s10535-013-0360-y
Effect of water stress on yield and nutrition quality of tomato plant overexpressing StAPX
- 1 College of Food and Biological Engineering, Jiangsu University, Zhenjiang, P.R. China
- 2 College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, P.R. China
We investigated the effect of water stress on yield and quality of tomato plants overexpressing Solanum lycopersicum thylakoid-bound ascorbate peroxidase gene (StAPX). APX activity, hydrogen peroxide content, net photosynthetic rate of tomato leaves, and yield and nutrition quality of tomato fruits were measured under soil moisture 70, 60, and 50 % of full field capacity. Results show that the capability of APX for scavenging hydrogen peroxide induced by water stress was higher in the transgenic than the wild type (WT) plants. The yield of fruits of the transgenic tomato plants was higher than that of WT plants under water stress and the fruit nutrition quality was not different. These results indicate that overexpression of StAPX might improve water stress tolerance in the transgenic tomato plants.
Keywords: chlorophyll; H2O2 scavenging; net photosynthetic rate; proline; Solanum lycopersicum; sugars; thylakoid-bound ascorbate peroxidase
Subjects: water stress; gene expression; chlorophyll; net photosynthetic rate; hydrogen peroxide; proline; ascorbate peroxidase; ascorbic acid; sugars; proteins; tomato; lycopene
Received: August 23, 2012; Revised: April 14, 2013; Accepted: April 17, 2013; Published: March 1, 2014 Show citation
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Sun, W.-H., Liu, X.-Y., Wang, Y., Hua, Q., Song, X.-M., Gu, Z., & Pu, D.-Z. (2014). Effect of water stress on yield and nutrition quality of tomato plant overexpressing StAPX. Biologia plantarum, 58(1), 99-104. doi: 10.1007/s10535-013-0360-y
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