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Zhang QY, Zhang LQ, Song LL, et al. The different interactions of Colletotrichum gloeosporioides with two strawberry varieties and the involvement of salicylic acid. Hortic Res. 2016;3:16007doi: 10.1038/hortres.2016.7.
Zhang, Q. Y., Zhang, L. Q., Song, L. L., Duan, K., Li, N., Wang, Y. X., & Gao, Q. H. (2016). The different interactions of Colletotrichum gloeosporioides with two strawberry varieties and the involvement of salicylic acid. Horticulture research, 316007. https://doi.org/10.1038/hortres.2016.7
Zhang, Qing-Yu, et al. "The different interactions of Colletotrichum gloeosporioides with two strawberry varieties and the involvement of salicylic acid." Horticulture research vol. 3 (2016): 16007. doi: https://doi.org/10.1038/hortres.2016.7
Zhang QY, Zhang LQ, Song LL, Duan K, Li N, Wang YX, Gao QH. The different interactions of Colletotrichum gloeosporioides with two strawberry varieties and the involvement of salicylic acid. Hortic Res. 2016 Mar 16;3:16007. doi: 10.1038/hortres.2016.7. eCollection 2016. PMID: 27004126; PMCID: PMC4793257.
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Hortic Res. 2016 Mar 16;3:16007. doi: 10.1038/hortres.2016.7. eCollection 2016.

The different interactions of Colletotrichum gloeosporioides with two strawberry varieties and the involvement of salicylic acid.

Horticulture research

Qing-Yu Zhang, Li-Qing Zhang, Li-Li Song, Ke Duan, Na Li, Yan-Xiu Wang, Qing-Hua Gao

Affiliations

  1. Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; College of Landscape Architecture and Arts, Northwest A&F University, Yangling, Shanxi 712100, China.
  2. Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS) , Shanghai 201403, China.
  3. Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; College of Agricultural Sciences, Gansu Agricultural University, Lanzhou 730000, China.
  4. School of Life Science, Taizhou University , Taizhou 318000, China.
  5. College of Agricultural Sciences, Gansu Agricultural University , Lanzhou 730000, China.

PMID: 27004126 PMCID: PMC4793257 DOI: 10.1038/hortres.2016.7

Abstract

The disease symptoms recognized as 'Anthracnose' are caused by Colletotrichum spp. and lead to large-scale strawberry (Fragaria×ananassa Duchesne) losses worldwide in terms of both quality and production. Little is known regarding the mechanisms underlying the genetic variations in the strawberry-Colletotrichum spp. interaction. In this work, Colletotrichum gloeosporioides (C. gloeosporioides) infection was characterized in two varieties exhibiting different susceptibilities, and the involvement of salicylic acid (SA) was examined. Light microscopic observation showed that C. gloeosporioides conidia germinated earlier and faster on the leaf surface of the susceptible cultivar compared with the less-susceptible cultivar. Several PR genes were differentially expressed, with higher-amplitude changes observed in the less-susceptible cultivar. The less-susceptible cultivar contained a higher level of basal SA, and the SA levels increased rapidly upon infection, followed by a sharp decrease before the necrotrophic phase. External SA pretreatment reduced susceptibility and elevated the internal SA levels in both varieties, which were sharply reduced in the susceptible cultivar upon inoculation. The less-susceptible cultivar also displayed a more sensitive and marked increase in the transcripts of NB-LRR genes to C. gloeosporioides, and SA pretreatment differentially induced transcript accumulation in the two varieties during infection. Furthermore, SA directly inhibited the germination of C. gloeosporioides conidia; NB-LRR transcript accumulation in response to SA pretreatment was both dose- and cultivar-dependent. The results demonstrate that the less-susceptible cultivar showed reduced conidia germination. The contribution of SA might involve microbial isolate-specific sensitivity to SA, cultivar/tissue-specific SA homeostasis and signaling, and the sensitivity of R genes and the related defense network to SA and pathogens.

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