Actin microfilaments are involved in the regulation of HVA1 transcript accumulation in drought-treated barley leaves

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• 作者：Katarzyna Śniegowska-Świerk^a ; ^{katarzyna.sniegowska@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Ewa Dubas^b ; ^{e.dubas@ifr-pan.edu.pl" class="auth_mail" title="E-mail the corresponding author} ; Marcin Rapacz^a ; ^{rrrapacz@cyf-kr.edu.pl" class="auth_mail" title="E-mail the corresponding author}
• 关键词：ACT11 ; actin 11 gene ; ADF1 ; ADF3 ; actin depolymerization factors encoding gene ; AFs ; actin filaments ; Ep ; epidermis ; HVA1 ; dehydrin encoding gene ; Lat-B ; latrunculin B ; Mc ; mesophyll ; RWC ; relative water content ; SRG6 ; drought-induced gene with putative transcription factor function
• 刊名：Journal of Plant Physiology
• 出版年：2016
• 出版时间：1 April 2016
• 年：2016
• 卷：193
• 期：Complete
• 页码：22-25
• 全文大小：1405 K

文摘

Drought is one of the stresses that limit the yield of barley. Despite extensive studies focused on the issue, the molecular mechanism of the response to drought is still not fully understood. In our previous study, we proposed drought-induced signal perception controlled by actin filaments (AFs). To test this hypothesis, we used a chemical inhibitor of AF polarization—latrunculin B. In drought-treated barley leaves, latrunculin B induced AF depolymerization and altered gene expression (mainly those controlling AF formation), notably inhibiting the expression of HVA1, a dehydrin encoding gene whose function in drought tolerance has been widely studied. These results suggest that AFs might be involved in water-deficit signal perception in plant cells.