Journal
BIOLOGIA PLANTARUM
Volume 60, Issue 4, Pages 655-666Publisher
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-016-0631-5
Keywords
Agrobacterium; Glycine max; root hydraulic conductivity; transpiration; Vetiveria zizanioides
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Funding
- Transgenic Engineering Crops Breeding Special Funds of China [2009ZX08004-008B]
- National Natural Science Foundation of China [31300337]
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Vetiver grass [Vetiveria zizanioides (L.) Nash] displays comprehensive abiotic stress tolerance closely related to fine maintenance of plant water relation mediated by plasma membrane intrinsic proteins (PIPs). Two open reading frame sequences of PIPs (867 and 873 bp) were cloned from vetiver grass and named as VzPIP1;1 and VzPIP2;1, respectively. Expression of green fluorescent protein revealed only subcellular localization of VzPIP2;1 in the plasma membrane. Agrobacterium tumefaciens mediated transgenic (VzPIP2;1) soybean plants had a higher water content in above-ground parts under sufficient water supply through enhancing transpiration as compared to the non-transgenic plants but displayed a more severe drought injury because of a lower photosynthesis and a higher transpiration rate. However, A. rhizogenes mediated transgenic soybean plants kept a higher water content in above-ground parts by improving root water transport and kept a more effective photosynthesis under normal and drought conditions.
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