Ribosomal protein RPL10A contributes to early plant development and abscisic acid-dependent responses in Arabidopsis
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Frontiers Media
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Plant ribosomal proteins play universal roles in translation, although they are also involved
in developmental processes and hormone signaling pathways. Among Arabidopsis RPL10
family members, RPL10A exhibits the highest expression during germination and early
development, suggesting that RPL10A is the main contributor to these processes. In this
work, we first analyzed RPL10A expression pattern in Arabidopsis thaliana using transgenic
RPL10Apro:GUS plants. The gene exhibits a ubiquitous expression pattern throughout
the plant, but it is most strongly expressed in undifferentiated tissues. Interestingly, gene
expression was also detected in stomatal cells. We then examined protein function during
seedling establishment and abscisic acid (ABA) response. Heterozygous rpl10A mutant
plants show decreased ABA-sensitivity during seed germination, are impaired in early
seedling and root development, and exhibit reduced ABA-inhibition of stomatal aperture
under light conditions. Overexpression of RPL10A does not affect the germination and
seedling growth, but RPL10A-overexpressing lines are more sensitive to ABA during early
plant development and exhibit higher stomatal closure under light condition both with
and without ABA treatment than wild type plants. Interestingly, RPL10A expression is
induced by ABA. Together, we conclude that RPL10A could act as a positive regulator
for ABA-dependent responses in Arabidopsis plants.
Para citar este articulo: Ramos RS, Casati P, Spampinato CP and Falcone Ferreyra ML (2020) Ribosomal Protein RPL10A Contributes to Early Plant Development and Abscisic Acid-Dependent Responses in Arabidopsis. Front. Plant Sci. 11:582353. doi: 10.3389/fpls.2020.582353
Para citar este articulo: Ramos RS, Casati P, Spampinato CP and Falcone Ferreyra ML (2020) Ribosomal Protein RPL10A Contributes to Early Plant Development and Abscisic Acid-Dependent Responses in Arabidopsis. Front. Plant Sci. 11:582353. doi: 10.3389/fpls.2020.582353
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