ArticleThe New phytologist2025
HalALMT1 mediates malate efflux in the cortex of mature cluster rootlets of Hakea laurina, occurring naturally in severely phosphorus-impoverished soil.
Article in The New phytologist, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Malate metabolism in horticultural crops: mechanistic insights and agricultural practices for quality improvement.Molecular horticulture · 2025Review
- Comparative Transcriptome Reveals ART1-Dependent Regulatory Pathways for Fe Toxicity Response in Rice Roots.Physiologia plantarumArticle
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16 authors.
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Abstract
Hakea laurina, a woody Proteaceae, naturally occurs in severely phosphorus (P)-impoverished habitats in southwest Australia. It develops distinctive cluster roots that exhibit a high capacity for carboxylate exudation and acid phosphatase activity, contributing to its P acquisition. However, the molecular mechanisms underlying these physiological functions remain poorly understood. We explored the cluster-root transcriptome using de novo RNA-Seq and identified Hakea laurina Aluminum-activated Malate Transporter 1 (HalALMT1), encoding an aluminum (Al)-activated malate transporter induced in mature cluster roots. We characterized HalALMT1 through electrophysiological assays and overexpression in Arabidopsis thaliana, and localized HalALMT1 expression, acid phosphatase activity, and suberized boundaries in cluster roots. Differentially expressed genes highlighted multiple increased carboxylate-related processes at cluster-root maturity. HalALMT1 released malate, an activity further enhanced by exposure to Al
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