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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Does Phoradendron perrottetii (mistletoe) alter polyphenols levels of Tapirira guianensis (host plant)?

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Autor(es):
Furlan, Claudia Maria [1] ; Anselmo-Moreira, Fernanda [1] ; Teixeira-Costa, Luiza [1] ; Ceccantini, Gregorio [1] ; Salminen, Juha-Pekka [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Biosci, Dept Bot, Rua Matao 277, BR-05508090 Sao Paulo - Brazil
[2] Univ Turku, Dept Chem, Nat Chem Res Grp, FI-20014 Turku - Finland
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Plant Physiology and Biochemistry; v. 136, p. 222-229, MAR 2019.
Citações Web of Science: 0
Resumo

The present study aimed to investigate the reciprocal effects of Phoradendron perrottetii (mistletoe) and T. guianensis (host plant) regarding their polyphenol composition. Taking into account that tannins are important molecules in plant defense and their biosynthesis tends to be enhanced when a species is exposed to stress, we address the following questions: (1) Are the tannins found in our model species important in the interaction between host and mistletoe? (2) Does the presence of mistletoe induce changes in the content of tannins and other polyphenols in the host plant? (3) Do we find differences between the tannin sub-groups in the responses of the host plant to mistletoe? (4) Could the observed differences reflect the relative importance of one tannin group over another as chemical defense against the mistletoe? Using a polyphenol and tannin group-specific MRM methods we quantified four different tannin sub-groups together with flavonoid and quinic acid derivatives by ultra-performance liquid chromatography tandem mass spectrometry together with the oxidative and protein precipitation activities of leaves and branches of Tapirira guianensis and Phoradendron perrottetii. We selected leaves and branches of six non-parasitized trees of T. guianensis. Leaves and branches of nine individuals of T. guianensis parasitized by P. perrottetii were also sampled. For each parasitized tree, we sampled an infested branch and its leaves, as well as a non-infested branch and its leaves. Infested branches were divided into three groups: gall (the host-parasite interface), proximal, and distal region. Both proanthocyanidins and ellagitanins seem to be important for plant-plant parasitism interaction: host infested tissues (gall and surrounding regions) have clearly less tannin contents than healthy tissues. Mistletoe showed high levels of quinic acid derivatives and flavonoids that could be important during hastorium formation and intrusion on host tissues, suggesting a defense mechanism that could promote oxidative stress together with an inhibition of mistletoe seed germination, consequently avoiding secondary infestations. Polyphenol detected in T. guianensis-P. perrottetii interaction could play different role as plant-mistletoe strategies of survival. (AU)

Processo FAPESP: 13/23322-3 - Perfil da alteração na produção de substâncias fenólicas, carboidratos e lipídeos na interação entre Tapirira guianensis (Anacardiaceae) parasitada por Phoradendron crassifolium (Santalaceae)
Beneficiário:Fernanda Anselmo Moreira
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 15/25715-8 - Taninos: caracterização química e importância ecológica.
Beneficiário:Cláudia Maria Furlan
Linha de fomento: Bolsas no Exterior - Pesquisa