Počet záznamů: 1
Interplay between phosphoinositides and actin cytoskeleton in the regulation of immunity related responses in Arabidopsis thaliana seedlings
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SYSNO ASEP 0509290 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Interplay between phosphoinositides and actin cytoskeleton in the regulation of immunity related responses in Arabidopsis thaliana seedlings Tvůrce(i) Kalachova, Tetiana (UEB-Q) ORCID
Leontovyčová, Hana (UEB-Q) ORCID
Iakovenko, Oksana (UEB-Q) ORCID
Pospíchalová, Romana (UEB-Q)
Maršík, P. (CZ)
Klouček, P. (CZ)
Janda, Martin (UEB-Q) RID, ORCID
Valentová, O. (CZ)
Kocourková, Daniela (UEB-Q) ORCID
Martinec, Jan (UEB-Q) RID, ORCID
Burketová, Lenka (UEB-Q) RID, ORCID
Ruelland, E. (FR)Celkový počet autorů 12 Číslo článku 103867 Zdroj.dok. Environmental and Experimental Botany. - : Elsevier - ISSN 0098-8472
Roč. 167, NOV (2019)Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Actin ; Callose ; Latrunculin B ; phosphatidylinositol-4-kinase ; Salicylic acid Vědní obor RIV CE - Biochemie Obor OECD Cell biology CEP GA17-05151S GA ČR - Grantová agentura ČR EF16_019/0000738 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000487174700027 EID SCOPUS 85071267482 DOI 10.1016/j.envexpbot.2019.103867 Anotace Actin cytoskeleton is indispensable for plant cell integrity. Besides, increasing evidences illustrate its crucial role in plant responses to environment, including defence against pathogens. Recently, we have demonstrated that pre-treatment with actin disrupting drugs latrunculin B (latB) and cytochalasin E can enhance plant resistance against bacterial and fungal pathogens via activation of salicylic acid (SA) pathway. Here, we show that actin depolymerization in Arabidopsis thaliana seedlings not only triggers SA biosynthesis by ICS1, but also induces callose deposition via callose synthase PMR4. This effect is SA-independent since still present in mutants that do not accumulate SA. LatB also triggers the expression of several defence related genes. We could distinguish genes, induced in a SA-dependent manner (PR1, WRKY38, ICS1) and those that are SA-independent (PR2, PAD4, BAP1). As actin cytoskeleton is tightly connected with membrane trafficking, we assayed the effect of latB on mutant plants invalidated in phosphatidylinositol 4-kinase beta1 and beta2 (PI4Kβ1β2). Deficiency in PI4Kβ1β2 enhanced latB-triggered actin filaments depolymerisation. Yet, it did not lead to a stronger callose deposition or SA biosynthesis in response to latB. Surprisingly, introduction of NahG construct or pad4 mutation in pi4kß1ß2 background had much lower effect on SA induction and SA-dependent gene expression changes than it has in wild type. We can thus conclude that actin disruption itself triggers immune-like responses: there is an induction of SA via PAD4 coupled to ICS1, it leads to the induction of PR1 and WRKY38, and this requires a functional PI4Kβ1β2 to be properly regulated. However, an alternative, SA-independent pathway also exists that leads to the enhanced expression of PR2 and to callose accumulation. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2020 Elektronická adresa http://dx.doi.org/10.1016/j.envexpbot.2019.103867
Počet záznamů: 1