ArticlePlant molecular biology2016
The Hevea brasiliensis XIP aquaporin subfamily: genomic, structural and functional characterizations with relevance to intensive latex harvesting.
Article in Plant molecular biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 21 citations in OpenAlex.
- Genome-Wide Identification and Expression Pattern Profiling of the Aquaporin Gene Family in Papaya (International journal of molecular sciences · 2023Article
- Genome-Wide Identification, Structure Characterization, and Expression Pattern Profiling of the Aquaporin Gene Family inInternational journal of molecular sciences · 2021Article
- FungalBiomolecules · 2021Article
- Genome Wild Analysis and Molecular Understanding of the Aquaporin Diversity in Olive Trees (International journal of molecular sciences · 2020Article
- The Tonoplast Intrinsic Protein GeneBioMed research international · 2020Article
- Overexpression of X Intrinsic Protein 1;1 inPlant direct · 2019Article
- Identification and substrate prediction of newHorticulture research · 2018Article
- Article
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Authors and funding
19 authors at 10 institutions in 3 countries.
Funding
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Abstract
X-Intrinsic Proteins (XIP) were recently identified in a narrow range of plants as a full clade within the aquaporins. These channels reportedly facilitate the transport of a wide range of hydrophobic solutes. The functional roles of XIP in planta remain poorly identified. In this study, we found three XIP genes (HbXIP1;1, HbXIP2;1 and HbXIP3;1) in the Hevea brasiliensis genome. Comprehensive bioinformatics, biochemical and structural analyses were used to acquire a better understanding of this AQP subfamily. Phylogenetic analysis revealed that HbXIPs clustered into two major groups, each distributed in a specific lineage of the order Malpighiales. Tissue-specific expression profiles showed that only HbXIP2;1 was expressed in all the vegetative tissues tested (leaves, stem, bark, xylem and latex), suggesting that HbXIP2;1 could take part in a wide range of cellular processes. This is particularly relevant to the rubber-producing laticiferous system, where this isoform was found to be up-regulated during tapping and ethylene treatments. Furthermore, the XIP transcriptional pattern is significantly correlated to latex production level. Structural comparison with SoPIP2;1 from Spinacia oleracea species provides new insights into the possible role of structural checkpoints by which HbXIP2;1 ensures glycerol transfer across the membrane. From these results, we discuss the physiological involvement of glycerol and HbXIP2;1 in water homeostasis and carbon stream of challenged laticifers. The characterization of HbXIP2;1 during rubber tree tapping lends new insights into molecular and physiological response processes of laticifer metabolism in the context of latex exploitation.
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