Ectopically expressing MdPIP1;3, an aquaporin gene, increased fruit size and enhanced drought tolerance of transgenic tomatoes

• DOI: 10.1186/s12870-017-1212-2
• Publication Date: 2017-12-19T09:40:50Z
• Authors: Lin Wang; Qing-Tian Li; Qiong Lei; Chao Feng; Xiaodong Zheng; Fangfang Zhou; Lingzi Li; Xuan Liu; Zhi Wang; Jin Kong
• Keywords: Drought Tolerance

Water deficit severely reduces apple growth and production, is detrimental to fruit quality size. This problem exacerbated as global warming implicated in producing more severe drought stress. Thus water-efficiency has becomes the major target for breeding. A desired tree can absorb transport water efficiently, which not only confers improved tolerance, but also guarantees size higher income returns. Aquaporins, channels, control transportation across membranes regulate flow by changing their amount activity. The exploration of molecular mechanism efficiency gene wealth will pave a way breeding tolerant tree. In current study, we screened out inducible aquaporin MdPIP1;3, specifically enhanced its expression during expansion 'Fuji' (Malus domestica Borkh. cv. Red Fuji). It localized on plasma belonged PIP1 subfamily. tolerance stress transgenic tomato plants ectopically expressing showing that rate losing isolated leaves was slower than wild type, stomata closed sensitively respond compared with type. Besides, length diameter fruits increased faster final, sizes fresh weights tomatoes were bigger Specially, cell levels, from larger number per mm2 less Altogether, MdPIP1;3 partially via reduced loss controlled closure leaves. addition, are heavier cells efficient membranes. Our research contribute engineering apples big when well watered under deficit.