ArticleTree physiology2023
Evidence for a trade-off between growth rate and xylem cavitation resistance in Callitris rhomboidea.
Article in Tree physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 19 citations in OpenAlex.
- Evidence for a trade-off between growth rate and xylem embolism resistance in 22 Eucalyptus species.The New phytologist · 2026Article
- Evolutionary trade-offs under stochastic water stress shape xylem vulnerability to drought.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Weak global trade-off between frost and drought resistance in trees.The New phytologist · 2026Article
- Adaptation in Wood Anatomical Traits to Temperature and Precipitation-A Common Garden Study.Plant, cell & environment · 2025Article
- Substantial capacitance found in the roots of 2 contrasting conifer species.Plant physiology · 2025Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The ideal plant water transport system is one that features high efficiency and resistance to drought-induced damage (xylem cavitation), however, species rarely possess both. This may be explained by trade-offs between traits, yet thus far, no proposed trade-off has offered a universal explanation for the lack of water transport systems that are both highly drought-resistant and highly efficient. Here, we find evidence for a new trade-off, between growth rate and resistance to xylem cavitation, in the canopies of a drought-resistant tree species (Callitris rhomboidea). Wide variation in cavitation resistance (P50) was found in distal branch tips (<2 mm in diameter), converging to low variation in P50 in larger diameter stems (>2 mm). We found a significant correlation between cavitation resistance and distal branchlet internode length across branch tips in C. rhomboidea canopies. Branchlets with long internodes (8 mm or longer) were significantly more vulnerable to drought-induced xylem cavitation than shorter internodes (4 mm or shorter). This suggests that varying growth rates, leading to differences in internode length, drive differences in cavitation resistance in C. rhomboidea trees. The only distinct anatomical difference found between internodes was the pith size, with the average pith to xylem area in long internodes being five times greater than in short internodes. Understanding whether this trade-off exists within and between species will help us to uncover what drives and limits drought resistance across the world's flora.
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