ArticleJournal of integrative plant biology2020
Maize WI5 encodes an endo-1,4-β-xylanase required for secondary cell wall synthesis and water transport in xylem.
Article in Journal of integrative plant biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 31 citations in OpenAlex.
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- Enhanced lignin and cellulose metabolism promote cell wall synthesis and growth of wild soybean HRA under alkali stress.Annals of botany · 2025Article
- How drought and ploidy level shape gene expression and DNA methylation in Phragmites australis.Plant cell reports · 2025Article
- Review
- Function Analysis of a Maize Endo-1,4-β-xylanase GeneInternational journal of molecular sciences · 2024Article
- Multifaceted roles of plant glycosyl hydrolases during pathogen infections: more to discover.Planta · 2024Review
- A cell-wall-modifying gene-dependent CLE26 peptide signaling confers drought resistance inPNAS nexus · 2024Article
- A birch ELONGATED HYPOCOTYL 5 gene enhances UV-B and drought tolerance.Forestry research · 2024Article
- Article
- A large-scale forward genetic screen for maize mutants with altered lignocellulosic properties.Frontiers in plant science · 2023Article
- Natural variation of DROT1 confers drought adaptation in upland rice.Nature communications · 2022Article
- Forgotten Actors: Glycoside Hydrolases During Elongation Growth of Maize Primary Root.Frontiers in plant science · 2021Article
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Authors and funding
9 authors at 1 institution in 1 country.
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Abstract
Water transport from roots to leaves through xylem is important for plant growth and development. Defects in water transport can cause drought stress, even when there is adequate water in the soil. Here, we identified the maize (Zea mays) wilty5 (wi5) mutant, which exhibits marked dwarfing and leaf wilting throughout most of its life cycle under normal growth conditions. wilty5 seedlings exhibited lower xylem conductivity and wilted more rapidly under drought, NaCl, and high temperature treatments than wild-type plants. Map-based cloning revealed that WI5 encodes an active endo-1,4-β-xylanase from glycosyl dehydration family 10, which mainly functions in degrading and reorganizing cell wall xylan. Reverse-transcription polymerase chain reaction and β-glucuronidase assays revealed that WI5 is highly expressed in stems, especially in internodes undergoing secondary wall assembly. RNA sequencing suggested that WI5 plays a unique role in internode growth. Immunohistochemistry and electron microscopy confirmed that wi5 is defective in xylan deposition and secondary cell wall thickening. Lignin deposition and xylan content were markedly reduced in wi5 compared to the wild-type plants. Our results suggest that WI5 functions in xylem cell wall thickening through its xylanase activity and thereby regulates xylem water transport, the drought stress response, and plant growth in maize.
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