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. 2020 Jun 29;9(7):814. doi: 10.3390/plants9070814

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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A dehydrin from the cactus Opuntia streptacantha (Genbank ID: HM581971) or any of three homologs from Arabidopsis thaliana COLD-REGULATED 47 (COR47), EARLY RESPONSIVE TO DEHYDRATION 10 (ERD10), and RESPONSIVE TO ABA 18 (RAB18) (dehydrins), encoded by At1g20440; At1g20450, and At5g66400, respectively, interact with the Arabidopsis membrane intrinsic protein (MIP) aquaporin ARABIDOPSIS THALIANA PLAMAMEMBRANE INTRINSIC PROTEIN2B (AtPIP2B), encoded by At2g37170. The subcellular distribution of both the LEAPs and this client protein along the plasma membrane is consistent with biochemical evidence of these interactions. The functional significance of this interaction has not yet been elucidated. The three different dehydrins can also associate with each other in homo- or hetero-dimers. The implications of these interactions are also unknown.