Related Experiment Video
Updated: Jun 30, 2026
11:09
A Simple Protocol for Mapping the Plant Root System Architecture Traits
Published on: February 10, 2023
Leaf Tissue-Specific Phosphorus Allocation Is Linked to Leaf Lifespan in Chickpea Accessions
Xiaolong Feng1,2, Peta L Clode1,3, Shuyan Li1,2
1School of Biological Sciences, The University of Western Australia, Perth, Western Australia, Australia.
Plant, Cell & Environment
|June 29, 2026
Summary
Chickpea plants strategically allocate phosphorus (P) within leaves. Greater P in mesophyll cells, supporting photosynthesis, correlated with longer leaf lifespan, offering insights for crop breeding.
Area of Science:
- Plant Physiology
- Agricultural Science
- Biochemistry
Background:
- Plants require phosphorus (P) for essential physiological functions, necessitating strategic allocation within leaf tissues.
- Limited understanding exists regarding how varying cellular P allocation patterns influence plant physiology and leaf characteristics.
Purpose of the Study:
- To investigate contrasting leaf cellular P-allocation patterns in chickpea accessions.
- To determine the physiological consequences of these P-allocation patterns, including photosynthetic P-use efficiency (PPUE) and P-remobilisation efficiency (PRE).
- To explore the relationship between P allocation, leaf lifespan, and phytohormone concentrations.
Main Methods:
- Quantified leaf P fractions, PPUE, and PRE in five chickpea accessions.
- Measured leaf lifespan and concentrations of phytohormones like abscisic acid (ABA), salicylic acid (SA), and jasmonates.
- Analyzed cellular P-allocation patterns in relation to physiological traits and hormone levels.
Main Results:
- Cellular P-allocation patterns were more strongly linked to leaf lifespan than to PPUE or PRE.
- Chickpea accessions with greater P allocation to the mesophyll exhibited longer leaf lifespans.
- Longer leaf lifespan was associated with lower jasmonate concentrations, not ABA; epidermal P allocation was linked to metabolite P.
Conclusions:
- Leaf tissue-specific P-allocation patterns differ significantly among chickpea accessions.
- Preferential P allocation to photosynthetically active mesophyll cells is associated with extended leaf lifespan.
- These findings suggest potential for enhancing P-use efficiency in crop breeding by optimizing P allocation strategies.
Related Concept Videos
02:16Light Acquisition
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
02:35Key Elements for Plant Nutrition
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
00:51Energy Budgets and Reproductive Strategies
Organisms must balance energy intake with the energy required for growth, maintenance, and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species reproduce only once in their lifetime, often investing most available resources into that single reproductive event. Iteroparous species, by contrast, reproduce multiple times over their lifetimes, typically allocating fewer resources to any single...
01:57Adaptations that Reduce Water Loss
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
03:02Primary and Secondary Growth in Roots and Shoots
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.