한빛사논문
- 조회257
Rahmatullah Jan a,b,1, Saleem Asif a,1, Sajjad Asaf c, Lubna c, Xiao-Xuan Du d, Jae-Ryoung Park e, Kim Nari a, Dibya Bhatta f, In-jung Lee f, Kyung-Min Kim a,b
aDepartment of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, South Korea
bCoastal Agriculture Research Institute, Kyungpook National University, Daegu, 41566, South Korea
cNatural and Medical Science Research Center, University of Nizwa, Nizwa, Oman
dBiosafty Division, National Academy of Agriculture Science, Rural Development, Administration, Jeonju, 54874, South Korea
eCrop Breeding Division, National Institute of Crop Science, Rural Development Administration, Wanju, 55365, South Korea
fDepartment of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
1These authors contributed equally to this work.
Corresponding author : Kyung-Min Kim
Abstract
The Arsenic (As) load on the environment has increased immensely due to large-scale industrial and agricultural uses of As in several synthetic products, such as fertilizers, herbicides, and pesticides. Melatonin is a plant hormone that has a key role in abiotic stress inhibition, but the mechanism of resilience to As stress remains unexplored in rice plants. In this study, we determined how As affects rice plant and how melatonin facilitate As stress tolerance in rice. Here we investigated that, exogenous melatonin reduced As stress by inducing anthocyanin biosynthesis. Melatonin induced the expression of anthocyanin biosynthesis genes such as PAL, CHS, CHI, F3H, DFR, and ANS, which resulted in 1659% and 389% increases in cyanidin and delphinidin, respectively. Similarly, melatonin application significantly induced SA and ABA accumulation in response to As stress in rice plant. Application of melatonin also significantly reduced expression of PT-2 and PT-8 (transporter genes) and reduced uptake of As and its translocation to other compartments. Melatonin and As analysis revealed that melatonin application significantly reduced As contents in the melatonin-supplemented plants, suggesting that As uptake is largely dependent on either the melatonin basal level or anthocyanin in rice plants. In this study, we investigated new symptoms on leaves, which can severely damage leaves and impair photosynthesis. However, anthocyanin as a chelating agent, detoxifies As in vacuole and reduces oxidative stress induced by As.
논문정보
- Research article
- 2023년 02월 (BRIC 등록일 2023-03-02)
- 국내(교신)+국외 연구진
- 생명과학 > 식량작물 및 원예작물
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