期刊
SCIENTIA HORTICULTURAE
卷 197, 期 -, 页码 130-134出版社
ELSEVIER
DOI: 10.1016/j.scienta.2015.09.022
关键词
Arbuscular mycorrhizal; Peach; Delta 1-Pyrroline-5-carboxylate synthase; Waterlogging stress
类别
资金
- National Natural Science Foundation of China [31101513]
- Institute of Root Biology, Yangtze University [R201401]
- Yangtze University Foundation for Young Scholars [cyq201326]
Peach plants are highly susceptible to soil waterlogging, which can strongly inhibit plant growth and fruit production, and even cause tree death. A pot study was conducted to investigate the effects of an arbuscular mycorrhizal fungus (AMF), Funneliformis mosseae, on chlorophyll concentration, proline concentration, and activity of proline metabolic enzymes (Delta 1-pyrroline-5-carboxylate synthase, P5CS; orn-delta-aminotransferase, delta-OAT; and proline dehydrogenase, ProDH) in leaves of peach [Prunes persica (L.) Batsch] seedlings under soil waterlogged and non-waterlogged conditions. After 12 days of waterlogged treatment, root mycorrhizal colonization and entry points were significantly decreased. Inoculation with F. mosseae significantly increased chlorophyll a, b, and a + b concentrations under waterlogged and non-waterlogged conditions, as compared with non-AMF inoculation. AMF inoculation led to more proline accumulation in leaves, accompanied an increase of P5CS activity and a decrease of delta-OAT and ProDH activity under waterlogged and non-waterlogged conditions. It was concluded that F. mosseae conferred a positive contribution to waterlogged tolerance of the peach plant through promotion of proline and chlorophyll biosysthesis. (C) 2015 Elsevier B.V. All rights reserved.
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