Assessments of salt tolerance in a bottle gourd line expressing the Arabidopsis H+-pyrophosphatase AVP1 gene and in a watermelon plant grafted onto a transgenic bottle gourd rootstock

Title
Assessments of salt tolerance in a bottle gourd line expressing the Arabidopsis H+-pyrophosphatase AVP1 gene and in a watermelon plant grafted onto a transgenic bottle gourd rootstock
Author(s)
박경일한증술[한증술]전수민[전수민]박성흔[박성흔]Aung H. Niang[Aung H. Niang]김창길[김창길]
Keywords
PHOTOSYSTEM-II EFFICIENCY; DROUGHT; STRESS; SCION; TRANSFORMATION; FLUORESCENCE; CULTIVARS; RESISTANT; SALINITY; CROPS
Issue Date
201504
Publisher
WILEY-BLACKWELL
Citation
PLANT BREEDING, v.134, no.2, pp.233 - 238
Abstract
In this study, we developed transgenic bottle gourd lines expressing the Arabidopsis H+-pyrophosphatase AVP1 gene and confirmed the stable integration of AVP1 in the genomes of bottle gourd T-2 homozygous lines and its transcription. Additional analyses of the AVP1-expressing lines indicated that AVP1 expression in bottle gourds could improve salt tolerance in the greenhouse, as the lines maintained higher relative water content under salt stress regime. Moreover, the axillary shoots of AVP1-expressing lines recovered gradually when the soil was desalinized, whereas wild-type plants died. Watermelon plants grafted onto the transgenic bottle gourd rootstock also exhibited greater salt tolerance than those grafted onto wild-type bottle gourd rootstock, by generating higher biomasses and photosystem II quantum yields. Therefore, the expression of AVP1 enhanced salt tolerance in the bottle gourd, and the use of a rootstocks improved by genetic engineering is one of the effective methods in improving the agronomic traits of watermelon.
URI
http://hdl.handle.net/YU.REPOSITORY/32711http://dx.doi.org/10.1111/pbr.12253
ISSN
0179-9541
Appears in Collections:
자연자원대학 > 원예생명과학과 > Articles
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