Impact of high nighttime temperature on respiration, membrane stability, antioxidant capacity, and yield of rice plants.

By A. R. Mohammed, L. Tarpley. 2009

237 citations recorded by the source corpus.

Nighttime temperature is one of the major environmental factors infl uencing plant metabolic processes. The respiration rates, membrane thermal stability (MTS), and total antioxidant capacities of leaves were investigated in rice (Oryza sativa L.) plants when exposed to high nighttime temperature (HNT) (32°C) or ambient nighttime temperature (ANT) (27°C), and with or without potential preventive exogenous effector (chemical) treatments. The exogenous effector treatments included α-tocopherol (vitamin E), glycine betaine, and salicylic acid, which play important but different roles in inducing thermal tolerance in many plant species. Plants were subjected to an HNT through use of continuously controlled infrared heaters, starting from 2000 h until 0600 h. High nighttime temperature increased respiration rates, decreased MTS, and negatively affected the yield (by 95%). Application of salicylic acid somewhat lowered the reduction in yield due to HNT (76 vs. 95%) by decreasing the respiration rates and increasing MTS and total antioxidant capacity of rice plants.

Subfields: Global and Planetary Change, Plant Science

View Paper: https://www.semanticscholar.org/paper/b6c378dfad7b248eef97c153846228d92489444a

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Citations in the corpus

High-Temperature Effects on Rice Growth, Yield, and Grain Quality (2011, background): “In rice plants grown under high night temperature (32 C), the membrane stability decreases (Mohammed and Tarpley, 2009b).”
Effect of glycinebetaine on proline, water use, and photosynthetic efficiencies, and growth of rice seedlings under salt stress (2010, background): “…purposes for which exogenously applied Glybet can be used, such as improving heat tolerance (Wahid and Shabbir 2005; Allakhverdiev et al. 2007; Mohammed and Tarpley 2009), freezing tolerance (Rajashekar et al. 1999; Chen et al. 2000; Xing and Rajashekar 2001; Park et al. 2006), and drought…”
Salicylic acid-induced abiotic stress tolerance and underlying mechanisms in plants (2015, background): “Exogenously applied SA was reported to modulate antioxidant levels, detoxify superoxide radicals, prevent oxidative damage, and protect membranes and important metabolic enzymes (Mohammed and Tarpley, 2009a).”
Impact of field-scale nighttime air temperatures during kernel development on rice milling quality (2011, background): “…rice cultivars under controlled conditions, have shown that elevated night temperatures ranging from 21 ◦C to 32 ◦C resulted in decreased yields (Nagarajan et al., 2010), decreased pollen germination, increased spikelet sterility, and increased respiration rates (Mohammed and Tarpley, 2009, 2010).”
High nighttime temperatures affect rice productivity through altered pollen germination and spikelet fertility (2009, background): “The average nighttime temperatures (between 2000 h and 0600 h) at Beaumont, TX, USA (longitude: 9481605900W; latitude: 30840000N) during the reproductive growth of the rice plants often ranged above 25 8C (up to 28 8C) (Mohammed and Tarpley, 2009).”