scholarly journals The Role of Bundle Sheath Extensions and Life Form in Stomatal Responses to Leaf Water Status

2011 ◽  
Vol 156 (2) ◽  
pp. 962-973 ◽  
Author(s):  
Thomas N. Buckley ◽  
Lawren Sack ◽  
Matthew E. Gilbert
Keyword(s):  
Life Form ◽  
Water Status ◽  
Bundle Sheath ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Stomatal Responses

scholarly journals Hydraulics Regulate Stomatal Responses to Changes in Leaf Water Status in the Fern Athyrium filix-femina

2018 ◽  
Vol 179 (2) ◽  
pp. 533-543 ◽  
Author(s):  
Amanda A. Cardoso ◽  
Joshua M. Randall ◽  
Scott A. M. McAdam
Keyword(s):  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Stomatal Responses

scholarly journals Leaf water relations in epiphytic ferns are driven by drought avoidance rather than tolerance mechanisms

2021 ◽  
Author(s):  
Courtney Campany ◽  
Jarmila Pittermann ◽  
Alex Baer ◽  
Helen Holmlund ◽  
Eric Schuettpelz ◽  
...  
Keyword(s):  
Stomatal Density ◽  
Water Status ◽  
Costa Rican ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Trait Divergence ◽  
Drought Avoidance ◽  
Fern Species ◽  
Selection For

Opportunistic diversification has allowed ferns to radiate into epiphytic niches in angiosperm dominated landscapes. However, our understanding of how ecophysiological function allowed establishment in the canopy and the potential transitionary role of the hemi-epiphytic life form remain unclear. Here, we surveyed 39 fern species in Costa Rican tropical forests to explore epiphytic trait divergence in a phylogenetic context. We examined leaf responses to water deficits in terrestrial, hemi-epiphytic, and epiphytic ferns and related these findings to functional traits that regulate leaf water status. Epiphytic ferns had reduced xylem area (-63%), shorter stipe lengths (-56%), thicker laminae (+41%), and reduced stomatal density (-46%) compared to terrestrial ferns. Epiphytic ferns exhibited similar turgor loss points, higher osmotic potential at saturation, and lower tissue capacitance after turgor loss than terrestrial ferns. Overall, hemi-epiphytic ferns exhibited traits that share characteristics of both terrestrial and epiphytic species. Our findings clearly demonstrate the prevalence of water conservatism in both epiphytic and hemi-epiphytic ferns, via selection for anatomical and structural traits that avoid leaf water stress. Even with likely canalized physiological function, adaptations for drought avoidance have allowed epiphytic ferns to successfully endure the stresses of the canopy habitat.

Employment of artificial neural networks for non-invasive estimation of leaf water status using color features: a case study in Spathiphyllum wallisii

2021 ◽  
Vol 43 (5) ◽  
Author(s):  
Amin Taheri-Garavand ◽  
Abdolhossein Rezaei Nejad ◽  
Dimitrios Fanourakis ◽  
Soodabeh Fatahi ◽  
Masoumeh Ahmadi Majd
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Non Invasive ◽  
Color Features ◽  
Artificial Neural

Visual estimation of plant water status in cereals

1979 ◽  
Vol 92 (1) ◽  
pp. 83-89 ◽  
Author(s):  
H. G. Jones
Keyword(s):  
Spring Wheat ◽  
Water Status ◽  
Plant Morphology ◽  
Leaf Water ◽  
Plant Water Status ◽  
Plant Water ◽  
Visual Estimation ◽  
Leaf Water Status ◽  
Visual Scoring ◽  
Breeding Programmes

SummaryThe potential offered for plant breeding programmes by visual scoring techniques for plant water status was investigated in rice and spring wheat. It was found that differing plant morphology could seriously bias visual estimates of leaf water potential, particularly in spring wheat. In spite of this problem, it was found that at least for rice, this type of approach may have potential in future breeding programmes where an estimate of leaf water status is required, such as those for drought tolerance, so long as a high intensity of selection is not necessary.

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