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Phytohormone responses in pepper (Capsicum annuum L.) leaves under a high density of aphid infestation
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SYSNO ASEP 0540633 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phytohormone responses in pepper (Capsicum annuum L.) leaves under a high density of aphid infestation Author(s) Florencio-Ortiz, V. (ES)
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Casas, J.L. (CO)Number of authors 3 Source Title Physiologia Plantarum. - : Wiley - ISSN 0031-9317
Roč. 170, č. 4 (2020), s. 519-527Number of pages 9 s. Language eng - English Country DK - Denmark Keywords JASMONIC ACID ; PLANT-GROWTH ; NICOTIANA-ATTENUATA Subject RIV EB - Genetics ; Molecular Biology OECD category Biochemistry and molecular biology R&D Projects LO1204 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000566535700001 EID SCOPUS 85090316560 DOI 10.1111/ppl.13188 Annotation The time course response of selected phytohormones has been evaluated in sweet pepper plants (Capsicum annuum L.) submitted to a high density (200 aphids/plant) of aphid (Myzus persicae Sulzer) infestation. Abscisic acid (ABA), salicylic acid (SA), indole-3-acetic acid (IAA), and jasmonates (JAs), including jasmonic acid (JA), jasmonoyl-l-isoleucine (JA-Ile), and cis-OPDA have been simultaneously identified and quantitated by UHPLC–MS/MS in pepper leaf tissue harvested at 3, 8 hours post-infestation (hpi), 1, 2, 4 and 7 days post-infestation (dpi). Infested plants showed a reduction in stem length at 7 dpi and in the number of leaves and leaf width from 4 dpi onwards. JA and JA-Ile significantly increased very early (from 3 hpi) while SA only accumulated at 7 dpi. Despite the high density of infestation, the aphid-induced accumulation of JAs was much lower than the burst typically induced by chewing herbivores. On the other side, ABA peaked in aphid-infested plants at 2 and 4 dpi, while IAA content did not change significantly at any time point. Growth inhibition may be partially explained by the high levels of JAs found in aphid-infested plants. The possibility that the obtained results support the hypothesis of the aphid manipulation of plant metabolism is discussed. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2021 Electronic address http://doi.org/10.1111/ppl.13188
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