TY - JOUR
T1 - The expression of genes related to proline metabolism in rice (Oryza sativa L.) under drought stress and re-watering conditions
AU - Dien, Doan Cong
AU - Mochizuki, Toshihiro
AU - Abiko, Tomomi
AU - Yamakawa, Takeo
N1 - Funding Information:
This research was supported by a Monbukagakusho Scholarship from the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). The authors would like to thank Agricultural Ecology Laboratory, Faculty of Agriculture, Kyushu University, for providing research facilities for this study.
Funding Information:
This research was supported by a Monbukagakusho Scholarship from the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). The authors would like to thank Agricultural Ecology Laboratory, Faculty of Agriculture, Kyushu University,
Publisher Copyright:
© 2020 Kyushu University. All rights reserved.
PY - 2020
Y1 - 2020
N2 - This study was conducted to investigate the expression of genes related to proline metabolism under drought stress and re-watering conditions in two rice varieties DA8 (drought tolerant) and Malagkit Pirurutong (drought sensitive). The results confirmed that proline was higher accumulated under drought stress than control in both varieties. Under the same drought severity, tolerant variety (DA8) accumulated higher proline than sensitive variety (Malagkit Pirurutong). The expression of P5CS1 and P5CS2, responsible for the synthesis of P5CS enzyme, which catalyzes the first step of the proline synthesis, were induced by drought stress. DA8 showed higher expressions of P5CS2, P5CR (which codes enzyme converting P5C into proline) and OsOAT (involve in proline synthesis through ornithine) than those in Malagkit Pirurutong under severe drought condition. The results suggested that high expression of P5CS1, P5CS2, P5CR and OsOAT genes, particularly under severe drought condition, were in line with the high accumulation of proline. At 4 days after re-watering, proline was quickly degraded due to the decreased expression of synthesis genes and the increased expression of P5CDH, a gene related to proline degradation after re-watering.
AB - This study was conducted to investigate the expression of genes related to proline metabolism under drought stress and re-watering conditions in two rice varieties DA8 (drought tolerant) and Malagkit Pirurutong (drought sensitive). The results confirmed that proline was higher accumulated under drought stress than control in both varieties. Under the same drought severity, tolerant variety (DA8) accumulated higher proline than sensitive variety (Malagkit Pirurutong). The expression of P5CS1 and P5CS2, responsible for the synthesis of P5CS enzyme, which catalyzes the first step of the proline synthesis, were induced by drought stress. DA8 showed higher expressions of P5CS2, P5CR (which codes enzyme converting P5C into proline) and OsOAT (involve in proline synthesis through ornithine) than those in Malagkit Pirurutong under severe drought condition. The results suggested that high expression of P5CS1, P5CS2, P5CR and OsOAT genes, particularly under severe drought condition, were in line with the high accumulation of proline. At 4 days after re-watering, proline was quickly degraded due to the decreased expression of synthesis genes and the increased expression of P5CDH, a gene related to proline degradation after re-watering.
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M3 - Article
AN - SCOPUS:85098703565
SN - 0023-6152
VL - 65
SP - 237
EP - 242
JO - Journal of the Faculty of Agriculture, Kyushu University
JF - Journal of the Faculty of Agriculture, Kyushu University
IS - 2
ER -