Shoot surface water uptake enables leaf hydraulic recovery in Avicennia marina

© 2019 Australian National University New Phytologist © 2019 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 224(2019), 4 vom: 01. Dez., Seite 1504-1511
1. Verfasser: Fuenzalida, Tomás I (VerfasserIn)
Weitere Verfasser: Bryant, Callum J, Ovington, Leuwin I, Yoon, Hwan-Jin, Oliveira, Rafael S, Sack, Lawren, Ball, Marilyn C
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't capacitance drought foliar water uptake leaf hydraulic conductance pressure-volume curve recovery shoot water uptake
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520 |a 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 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a capacitance 
650 4 |a drought 
650 4 |a foliar water uptake 
650 4 |a leaf hydraulic conductance 
650 4 |a pressure-volume curve 
650 4 |a recovery 
650 4 |a shoot water uptake 
700 1 |a Bryant, Callum J  |e verfasserin  |4 aut 
700 1 |a Ovington, Leuwin I  |e verfasserin  |4 aut 
700 1 |a Yoon, Hwan-Jin  |e verfasserin  |4 aut 
700 1 |a Oliveira, Rafael S  |e verfasserin  |4 aut 
700 1 |a Sack, Lawren  |e verfasserin  |4 aut 
700 1 |a Ball, Marilyn C  |e verfasserin  |4 aut 
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