Next Article in Journal
Functional Analysis of StPHT1;7, a Solanum tuberosum L. Phosphate Transporter Gene, in Growth and Drought Tolerance
Previous Article in Journal
Differential Interpretation of Mountain Temperatures by Endospermic Seeds of Three Endemic Species Impacts the Timing of In Situ Germination
Previous Article in Special Issue
Roles of Aquaporins in Plant-Pathogen Interaction
Open AccessArticle

A Cytoplasmic Receptor-like Kinase Contributes to Salinity Tolerance

1
Department of Plant Sciences, University of California, Davis, CA 95616, USA
2
School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel
3
Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, Jiangsu, China
4
The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
*
Authors to whom correspondence should be addressed.
These authors contributed equally.
Plants 2020, 9(10), 1383; https://doi.org/10.3390/plants9101383
Received: 28 September 2020 / Revised: 12 October 2020 / Accepted: 15 October 2020 / Published: 17 October 2020
(This article belongs to the Special Issue Plant Aquaporins)
Receptor-like cytoplasmic kinases (RLCKs) are receptor kinases that lack extracellular ligand-binding domains and have emerged as a major class of signaling proteins that regulate plant cellular activities in response to biotic/abiotic stresses and endogenous extracellular signaling molecules. We have identified a rice RLCK (OsRLCK311) that was significantly higher in transgenic pSARK-IPT rice (Oryza sativa) that exhibited enhanced growth under saline conditions. Overexpression of OsRLCK311 full-length protein (RLCK311FL) and the C-terminus of OsRLCK311 (ΔN) in Arabidopsis confirmed its role in salinity tolerance, both in seedlings and mature plants. Protein interaction assays indicated that OsRLCK311 and ΔN interacted in-vivo with the plasma membrane AQP AtPIP2;1. The RLCK311-PIP2;1 binding led to alterations in the stomata response to ABA, which was characterized by more open stomata of transgenic plants. Moreover, OsRLCK311-ΔN effect in mediating enhanced plant growth under saline conditions was also observed in the perennial grass Brachypodium sylvaticum, confirming its role in both dicots and monocots species. Lastly, OsRLCK311 interacted with the rice OsPIP2;1. We suggest that the rice OsRLCK311 play a role in regulating the plant growth response under saline conditions via the regulation of the stomata response to stress. This role seems to be independent of the RLCK311 kinase activity, since the overexpression of the RLCK311 C-terminus (ΔN), which lacks the kinase full domain, has a similar phenotype to RLCK311FL. View Full-Text
Keywords: receptor-like cytoplasmic kinases; salinity tolerance; Oryza sativa; aquaporins receptor-like cytoplasmic kinases; salinity tolerance; Oryza sativa; aquaporins
Show Figures

Figure 1

MDPI and ACS Style

Sade, N.; Weng, F.; Tajima, H.; Zeron, Y.; Zhang, L.; Rubio Wilhelmi, M.M.; Day, G.; Peleg, Z.; Blumwald, E. A Cytoplasmic Receptor-like Kinase Contributes to Salinity Tolerance. Plants 2020, 9, 1383.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop