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- Title
Cross-protection against anthracnose with heat stress, antioxidative changes and proteomic analysis in mycorrhizal cyclamen.
- Authors
Watanabe, S.; Matsubara, Y.-I.
- Abstract
Cross-protection against anthracnose with shock heat stress, antioxidative changes and proteomic analysis in mycorrhizal cyclamen were investigated. Eleven weeks after arbuscular mycorrhizal fungus (AMF, Glomus fasciculatum) inoculation, cyclamen (Cyclamen persicum, cv. Pastel) plants were acclimated under 20°C for 4 days, followed to 35°C (shock heat stress, SHS) for 7 days, and inoculated with Colletrichum gloeosporioides (CG) as anthracnose pathogen. Seven days after SHS treatment, dry weights of leaves, bulbs and roots increased in mycorrhizal plants, thus, growth promotion appeared. In addition, mycorrhizal plants showed higher resistance to anthracnose compared to non-mycorrhizal control plants. Regarding antioxidative activity, superoxide dismutase (SOD) activity increased in roots of mycorrhizal plants under 7d after SHS. DPPH radical scavenging activity increased in some parts of the mycorrhizal plants under SHS and CG-inoculated conditions. As for proteomic analysis, totally 29 spots changed in mycorrhizal plants through SHS and CG-inoculated conditions. In this case, the spot of 20.4kDa was detected only in mycorrhizal plots, furthermore, 4 spots intensively appeared in mycorrhizal plots through SHS and CG conditions. From these findings, AMF could alleviate heat shock stress with promoting host plant growth and induce resistance to anthracnose under heat stress. In addition, it supposed that antioxidative modification would have cross association with the resistance to heat shock and anthracnose, and the symbiosis-specific changes in some proteins might have concern with the cross protection.
- Subjects
CYCLAMEN; ANTHRACNOSE; EFFECT of heat on plants; ANTIOXIDANTS; DISEASE resistance of plants; PROTEIN expression; GLOMUS (Fungi); SUPEROXIDE dismutase
- Publication
Advances in Horticultural Science, 2014, Vol 28, Issue 4, p195
- ISSN
0394-6169
- Publication type
Article