Journal
PLANT PHYSIOLOGY AND BIOCHEMISTRY
Volume 71, Issue -, Pages 87-95Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2013.07.002
Keywords
Rice (Oryza sativa); Arbuscular mycorrhizal fungi (AMF); Nitrogen (N); Carbon (C); Low temperature; N level; Jasmonic acid (JA)
Categories
Funding
- One Hundred Talents Program in CAS
- 1.2.4 Program in NEIGAE
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We performed an experiment to determine how N and C metabolism is involved in the low-temperature tolerance of mycorrhizal rice (Oryza sativa) at different N levels and examined the possible signaling molecules involved in the stress response of mycorrhizal rice. Pot cultures were performed, and mycorrhizal rice growth was evaluated based on treatments at two temperatures (15 degrees C and 25 degrees C) and two N levels (20 mg pot(-1) and 50 mg pot(-1)). The arbuscular mycorrhizal fungi (AMF) colonization of rice resulted in different responses of the plants to low and high N levels. The mycorrhizal rice with the low N supplementation had more positive feedback from the symbiotic AMF, as indicated by accelerated N and C metabolism of rice possibly involving jasmonic acid (JA) and the up-regulation of enzyme activities for N and C metabolism. Furthermore, the response of the mycorrhizal rice plants to low temperature was associated with P uptake and nitric oxide (NO). Crown Copyright (C) 2013 Published by Elsevier Masson SAS. All rights reserved.
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