Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 68, Issue 15, Pages 3997-3999Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erx227
Keywords
Ca2+ signaling; calcium; CAX; guard cells; homeostasis; mesophyll; protein interaction; signaling; transport
Categories
Funding
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1146827] Funding Source: National Science Foundation
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Vacuolar Ca2+/H+ antiporters (CAXs) contribute to Ca2+ homeostasis within plant cells. But do they do more? Arabidopsis CAX isoforms have heretofore not been known to act in concert, but Hocking et al. (2017) now present a plethora of evidence suggesting that this underlies plasticity in response to environmental cues. CAX1 and CAX3 may form heteromeric transporters that impact guard cell function/leaf gas exchange, and leaf (mesophyll) cell responses to biotic stress.
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