Cellular localization of aquaporin mRNA in hybrid poplar stems

Almeida-Rodríguez, Adriana M.; Hacke, Uwe G.

doi:10.3732/ajb.1200088

Cited by 34 publications

(14 citation statements)

References 30 publications

(38 reference statements)

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“…This has been described previously in grapevine (Halis et al 2012). Indeed, vessel elements as well as fibers may remain alive (i.e., retain an intact cell membrane) at locations distant from the vascular cambium in some species (Zasada and Zahner 1969;Almeida-Rodriguez and Hacke 2012;Bollhöner et al 2012).…”

Section: For Information On Pit Formation In Conifers)mentioning

confidence: 80%

Grapevine Xylem Development, Architecture, and Function

Jacobsen

Rodriguez‐Zaccaro

Lee

et al. 2015

Functional and Ecological Xylem Anatomy

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Section: For Information On Pit Formation In Conifers)mentioning

confidence: 80%

Grapevine Xylem Development, Architecture, and Function

Jacobsen

Rodriguez‐Zaccaro

Lee

et al. 2015

Functional and Ecological Xylem Anatomy

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“…These contact cells are sites of increased enzyme activity (Sauter et al ). Contact cells have large vessel‐facing pits (Murakami et al ; Plavcová and Hacke ) and express high numbers of PIP mRNA (Almeida‐Rodriguez and Hacke ). These features are consistent with the hypothesis that PIPs are located in the plasma membrane of contact cells to facilitate water exchange between the vessel and parenchyma networks.…”

Section: Molecular Biology Of Xylem Functionmentioning

confidence: 99%

Plant xylem hydraulics: What we understand, current research, and future challenges

Venturas

Sperry

Hacke

2017

JIPB

359

263

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Herein we review the current state-of-the-art of plant hydraulics in the context of plant physiology, ecology, and evolution, focusing on current and future research opportunities. We explain the physics of water transport in plants and the limits of this transport system, highlighting the relationships between xylem structure and function. We describe the great variety of techniques existing for evaluating xylem resistance to cavitation. We address several methodological issues and their connection with current debates on conduit refilling and exponentially shaped vulnerability curves. We analyze the trade-offs existing between water transport safety and efficiency. We also stress how little information is available on molecular biology of cavitation and the potential role of aquaporins in conduit refilling. Finally, we draw attention to how plant hydraulic traits can be used for modeling stomatal responses to environmental variables and climate change, including drought mortality.

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“…This is achieved through changes in abundance or activity in response to a number of environmental cues, including water stress (Gilliham et al, 2011;Maurel, Verdoucq, Luu, & Santoni, 2008). The role of these aquaporins is widely demonstrated in roots and leaves (Javot & Maurel, 2002;Tyerman, Niemietz, & Bramley, 2002) and more recently in stems (Almeida-Rodriguez & Hacke, 2012;Steppe, Cochard, Lacointe, & Améglio, 2012). In both herbaceous and woody plants, aquaporin inhibition results in a large decrease in water flux and a reduction in hydraulic conductance by more than 60% (Adiredjo, Navaud, Grieu, & Lamaze, 2014;Gambetta et al, 2013;Johnson, Sherrard, Domec, & Jackson, 2014).…”

mentioning

confidence: 99%

Aquaporin regulation in roots controls plant hydraulic conductance, stomatal conductance, and leaf water potential in Pinus radiata under water stress

Rodríguez‐Gamir

Xue

Clearwater

et al. 2018

Plant Cell & Environment

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Stomatal regulation is crucial for forest species performance and survival on drought‐prone sites. We investigated the regulation of root and shoot hydraulics in three Pinus radiata clones exposed to drought stress and its coordination with stomatal conductance (gs) and leaf water potential (Ψleaf). All clones experienced a substantial decrease in root‐specific root hydraulic conductance (Kroot‐r) in response to the water stress, but leaf‐specific shoot hydraulic conductance (Kshoot‐l) did not change in any of the clones. The reduction in Kroot‐r caused a decrease in leaf‐specific whole‐plant hydraulic conductance (Kplant‐l). Among clones, the larger the decrease in Kplant‐l, the more stomata closed in response to drought. Rewatering resulted in a quick recovery of Kroot‐r and gs. Our results demonstrated that the reduction in Kplant‐l, attributed to a down regulation of aquaporin activity in roots, was linked to the isohydric stomatal behaviour, resulting in a nearly constant Ψleaf as water stress started. We concluded that higher Kplant‐l is associated with water stress resistance by sustaining a less negative Ψleaf and delaying stomatal closure.

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Cellular localization of aquaporin mRNA in hybrid poplar stems

Cited by 34 publications

References 30 publications

Grapevine Xylem Development, Architecture, and Function

Grapevine Xylem Development, Architecture, and Function

Plant xylem hydraulics: What we understand, current research, and future challenges

Aquaporin regulation in roots controls plant hydraulic conductance, stomatal conductance, and leaf water potential in Pinus radiata under water stress

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