High temperature leads to a loss of isohydry in Pinus radiata
Clicks: 4
ID: 315088
2026
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Steady Performance
0.9
/100
4 views
3 readers
AI Quality Assessment
Not analyzed
Readership in this journal
SteadyRanked #146 of 293 articles by views in Journal of experimental botany
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 293 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Pinus radiata has been characterised as strongly isohydric, which means that it tends to close stomata to maintain leaf water potential relatively constant under changing environmental conditions. However, under high temperatures, where leaf cooling may be necessary to prevent overheating, the ability to maintain this isohydric behaviour remains unexplored. Here, we examined the impact of increasing temperature (and associated needle-to-air vapor pressure deficit hereafter referred to as VPDneedle) on whole plant stomatal conductance (gc), canopy transpiration (Ec), minimal conductance (gmin) and stem water potential (Ѱstem) in well-watered Pinus radiata plants. A decline in gc was observed as temperature increased from 22°C to 32°C resulting in 27% stomatal closure, followed by levelling off at further higher temperatures. However, this stomatal closure was not enough to prevent an exponential rise in Ec and pronounced declines in Ѱstem. gmin contributed 18% of gc at 42°C and showed an exponential rise at temperatures higher than 42°C. Our findings suggests that high temperatures may lead to drop in isohydry in Pinus radiata. This shift may be crucial to avoid overheating and damage of plant tissues but at the same time leads to more negative Ѱstem, thereby increasing the chances of xylem embolism. The observed shift in stomatal response reveals that even in water conservative species like Pinus radiata, high temperatures may compromise stomatal regulation of water potential.
| Reference Key |
openalex_W7162538736
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | Kritika Sharma, Ibrahim Bourbia, Faustino Rubio Pérez, Timothy Brodribb |
| Journal | Journal of experimental botany |
| Year | 2026 |
| DOI |
10.1093/jxb/erag253
|
| URL | |
| Keywords | Keywords not found |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.