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

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 T2 homozygous lines and its transcription. Additional analyses of the AVP1‐expressing lines indicated that AVP...

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Published in:Plant breeding 2015-04, Vol.134 (2), p.233-238
Main Authors: Han, Jeung-S., Park, Kyeung I., Jeon, Su M., Park, Sunghun, Naing, Aung H., Kim, Chang K.
Format: Article
Language:English
Subjects:
bottle gourd
gene-modified
Genetic engineering
Germination
graft
RT-PCR
Salt
salt stress
watermelon
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container_issue 2
container_start_page 233
container_title Plant breeding
container_volume 134
creator Han, Jeung-S.
Park, Kyeung I.
Jeon, Su M.
Park, Sunghun
Naing, Aung H.
Kim, Chang K.
description 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 T2 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.
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subjects bottle gourd
gene-modified
Genetic engineering
Germination
graft
RT-PCR
Salt
salt stress
watermelon
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
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