ArticleJournal of experimental botany2026
Carboxylate exudation and reproductive effort are associated with leaf phosphorus-resorption efficiency in chickpea.
Article in Journal of experimental botany, 2026. 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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Who cites it
2 citing papers in PubMed.
- Leaf Tissue-Specific Phosphorus Allocation Is Linked to Leaf Lifespan in Chickpea Accessions.Plant, cell & environment · 2026Article
- Concurrent Increases in Root Phosphorus Acquisition and Leaf Phosphorus Resorption Underpin Enhanced Phosphorus Economy in Chickpea During Reproductive Development.Plant, cell & environment · 2026Article
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Authors and funding
9 authors.
Funding
Abstract
Efficient leaf phosphorus (P) resorption is a key process that enhances internal P-use efficiency in plants. However, the interactions among leaf P resorption, senescence dynamics, and seed P accumulation remain poorly understood. We evaluated 266 chickpea accessions with diverse genetic backgrounds in a temperature-controlled glasshouse experiment. Measurements included leaf P-resorption efficiency (PRE), reproductive allocation, phenology, canopy senescence traits, and biomass distribution, along with rhizosheath carboxylates, which is an indicator of root P-acquisition strategy. Accessions with higher leaf P concentrations exhibited greater PRE, initiated canopy senescence earlier, and maintained a faster canopy P translocation rate. These combined traits significantly increased aboveground productivity and enhanced P-use efficiency. We also identified a non-linear relationship between carboxylate exudation and PRE: resorption efficiency rose with increased exudation before reaching a plateau. Structural equation modelling revealed that greater carboxylate exudation and reproductive allocation were positively associated with enhanced P resorption. Substantial variation in PRE was observed across accessions, ranging from 70% to 89%. This study is the first to systematically integrate leaf P resorption, root P acquisition, reproductive investment, biomass partitioning, and senescence dynamics. Our findings provide new insights into P-use strategies in chickpea and highlight potential pathways for improving crop P-use efficiency.
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