Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina

Tomás I. Fuenzalida*, Callum J. Bryant, Leuwin I. Ovington, Hwan Jin Yoon, Rafael S. Oliveira, Lawren Sack, Marilyn C. Ball

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)

    Abstract

    The significance of shoot surface water uptake (SSWU) has been debated, and it would depend on the range of conditions under which it occurs. We hypothesized that the decline of leaf hydraulic conductance (Kleaf) in response to dehydration may be recovered through SSWU, and that the hydraulic conductance to SSWU (Ksurf) declines with dehydration. We quantified effects of leaf dehydration on Ksurf and effects of SSWU on recovery of Kleaf in dehydrated leaves of Avicennia marina. SSWU led to overnight recovery of Kleaf, with recovery retracing the same path as loss of Kleaf in response to dehydration. SSWU declined with dehydration. By contrast, Ksurf declined with rehydration time but not with dehydration. Our results showed a role of SSWU in the recovery of leaf hydraulic conductance and revealed that SSWU is sensitive to leaf hydration status. The prevalence of SSWU in vegetation suggests an important role for atmospheric water sources in maintenance of leaf hydraulic function, with implications for plant responses to changing environments.

    Original languageEnglish
    Pages (from-to)1504-1511
    Number of pages8
    JournalNew Phytologist
    Volume224
    Issue number4
    DOIs
    Publication statusPublished - 1 Dec 2019

    Fingerprint

    Dive into the research topics of 'Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina'. Together they form a unique fingerprint.

    Cite this