Application of rice endophytic Bradyrhizobium strain SUTN9-2 containing modified ACC deaminase to rice cultivation under water deficit conditions
| Autor: | Aphakorn Longtonglang, Nantakorn Boonkerd, Sukanlaya Sarapat, Teerayoot Girdthai, Kamolchanok Umnajkitikorn, Neung Teaumroong, Panlada Tittabutr |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine rice endophytic bacteria Plant Science behavioral disciplines and activities 01 natural sciences Bradyrhizobium SB1-1110 03 medical and health sciences 1-aminocyclopropane-1-carboxylate (acc) deaminase water deficit conditions Ethylene biosynthesis QK900-989 Plant ecology Ecology Evolution Behavior and Systematics ACC deaminase Strain (chemistry) biology Chemistry rice bradyrhizobium sp. sutn9-2 Plant culture food and beverages biology.organism_classification stomatognathic diseases Horticulture 030104 developmental biology nervous system human activities psychological phenomena and processes 010606 plant biology & botany |
| Zdroj: | Journal of Plant Interactions, Vol 15, Iss 1, Pp 322-334 (2020) |
| DOI: | 10.6084/m9.figshare.13049369 |
| Popis: | Bacterial 1-aminocyclopropane-1-carboxylate (ACC) deaminase is a key factor for alleviating the plant ethylene biosynthesis, which is induced by stress. The ACC deaminase-improved strains of the rice endophytic Bradyrhizobium sp. SUTN9-2, SUTN9-2 (ACCDadap) and SUTN9-2:pMG103::acdRS, exhibit 1.4- and 8.9-fold higher ACC deaminase activity than the wild type, respectively (Sarapat S, Songwattana P, Longtonglang A, Umnajkitikorn K, Girdthai T, Tittabutr P, Boonkerd N, Teaumroong N. 2020. Effects of Increased 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Activity in Bradyrhizobium sp. SUTN9-2 on Mung Bean Symbiosis under Water Deficit Conditions. Microbes Environ. 35). The effects of these on rice growth under water deficit conditions were evaluated. The bacterial inoculations reduced ethylene synthesis, leading to a reduction in membrane destruction and the chlorophyll content of rice. Furthermore, the bacterial inoculations improved the leaf relative water content, survival, recovery rates, and improved the crop yield in field conditions. Therefore, the water deficit tolerance of rice was improved by controlling ethylene biosynthesis by improving ACC deaminase activity with endophytic SUTN9-2. Moreover, the SUTN9-2 (ACCDadap) strain can be used as a bio-inoculant under field conditions to enhance rice growth, grain yield, and enhance drought tolerance. |
| Databáze: | OpenAIRE |
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