scholarly journals Leaf Water Balance During Oscillation of Stomatal Aperture

1969 ◽  
Vol 44 (6) ◽  
pp. 826-830 ◽  
Author(s):  
A. R. G. Lang ◽  
Betty Klepper ◽  
Malcolm J. Cumming
Keyword(s):  
Water Balance ◽  
Leaf Water ◽  
Stomatal Aperture ◽  
Leaf Water Balance

scholarly journals Vascular bundle sheath and mesophyll cells modulate leaf water balance in response to chitin

2019 ◽  
Vol 101 (6) ◽  
pp. 1368-1377 ◽  
Author(s):  
Ziv Attia ◽  
Ahan Dalal ◽  
Menachem Moshelion
Keyword(s):  
Water Balance ◽  
Vascular Bundle ◽  
Bundle Sheath ◽  
Leaf Water ◽  
Mesophyll Cells ◽  
Leaf Water Balance

Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae)

Plant Ecology ◽  
2014 ◽  
Vol 215 (11) ◽  
pp. 1255-1267 ◽  
Author(s):  
Mei Sun ◽  
Shi-Jian Yang ◽  
Jiao-Lin Zhang ◽  
Megan Bartlett ◽  
Shi-Bao Zhang
Keyword(s):  
Water Balance ◽  
Leaf Water ◽  
Correlated Evolution ◽  
Leaf Water Balance

scholarly journals Vascular bundle sheath and mesophyll regulation of leaf water balance in response to chitin

2018 ◽  
Author(s):  
Ziv Attia ◽  
Ahan Dalal ◽  
Menachem Moshelion
Keyword(s):  
Water Balance ◽  
Vascular Bundle ◽  
Vascular System ◽  
Defense Responses ◽  
Hydraulic Conductance ◽  
Bundle Sheath ◽  
Leaf Water ◽  
Receptor Kinase ◽  
Mesophyll Cells ◽  
Leaf Water Balance

ABSTRACTPlants can detect pathogen invasion by sensing pathogen-associated molecular patterns (PAMPs). This sensing process leads to the induction of defense responses. Most PAMP mechanisms of action have been described in the guard cells. Here, we describe the effects of chitin, a PAMP found in fungal cell walls, on the cellular osmotic water permeability (Pf) of the leaf vascular bundle-sheath (BS) and mesophyll cells and its subsequent effect on leaf hydraulic conductance (Kleaf).The BS is a parenchymatic tissue that tightly encases the vascular system. BS cells have been shown to controlKleafthrough changes in theirPf, for example, in response to ABA. It was recently reported that, in Arabidopsis, the chitin receptors chitin elicitor receptor kinase 1 (CERK1) and LYSINE MOTIF RECEPTOR KINASE 5 (LYK5) are highly expressed in the BS, as well as the neighboring mesophyll. Therefore, we studied the possible impact of chitin on these cells.Our results revealed that both BS cells and mesophyll cells exhibit a sharp decrease inPfin response to chitin treatment. In addition, xylem-fed chitin decreasedKleafand led to stomatal closure. However, anAtlyk5mutant showed none of these responses. ComplimentingAtLYK5specifically in the BS cells (using the SCARECROW promoter) and transient expresion in mesophyll cells each resulted in a response to chitin that was similar to that observed in the wild type. These results suggest that BS and mesophyll cells each play a role in the perception of apoplastic chitin and in initiating chitin-triggered immunity.Significance StatementPAMP perception by plant receptors triggers various defense responses important for plant immunity. Here we provide new insights into a topic that has received a great deal of previous attention, revealing that a chitin immune response is present in additional leaf tissues other than the stomata. Chitin perception by the bundle sheath cells enwrapping the whole leaf vascular system decrease its cellular osmotic permeability and leaf hydraulic conductance. This in turn, leads to hydraulic signals being sent to the stomata and regulates whole-leaf water balance in response to chitin application and, perhaps, during fungal infection. Emphasizing the dynamic role of the BS in chitin-sensing and water balance regulation.

Leaf water balance mediated by aquaporins under salt stress and associated glucosinolate synthesis in broccoli

Plant Science ◽  
2008 ◽  
Vol 174 (3) ◽  
pp. 321-328 ◽  
Author(s):  
Carmen López-Berenguer ◽  
Mª Carmen Martínez-Ballesta ◽  
Cristina García-Viguera ◽  
Micaela Carvajal
Keyword(s):  
Salt Stress ◽  
Water Balance ◽  
Leaf Water ◽  
Leaf Water Balance
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