We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Differences in biochemical, physiological and molecular response mechanisms of rice, weedy rice and barnyardgrass subjected to drought.
- Authors
Agostinetto, Dirceu; Oliveira, Cláudia; Claudia Langaro, Ana; Gomes da Silva, Jéssica Dias; Facco Barbieri, Geovana
- Abstract
The drought stress tolerance may differ among species and cultivars. The drought effect on plants depends on the impact on the plant's physiological, biochemical and molecular processes, as well as on its ability to adapt under these conditions. This study aimed to evaluate the physiological and biochemical responses, and determine the expression of the genes OsAPX2, OsHSP24.15, OsHSP71.10 and OsHSP85.88 under drought conditions in rice, weedy rice and barnyardgrass. A greenhouse experiment was performed in a complete randomized design, with four replications and two factors: water conditions (well-watered and water deficit) and plant species [rice (Oryza sativa cv. Puitá), weedy rice (Oryza spp.) and barnyardgrass (Echinochloa spp.)]. Under drought conditions, the rice and weedy rice plants showed more cellular damage than the barnyardgrass, and the three species showed a reduced photosynthetic rate. C3 plants (rice and weedy rice) increased the damage to lipids and proteins at 5 days of drought. However, for C4 plants (barnyardgrass), the drought conditions did not affect the biochemical parameters. The expression of the OsHSP85.88 gene increased in the three plants exposed to water deficit.
- Subjects
DROUGHTS; CARBON 4 photosynthesis; RICE; PHOTOSYNTHETIC rates; PLANT-water relationships; DROUGHT tolerance; PLANT species
- Publication
Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical, 2022, Vol 52, p1
- ISSN
1517-6398
- Publication type
Article
- DOI
10.1590/1983-40632022v5270487