Species‐specific stomatal ABA responses in juvenile ferns grown from spores

Wuyun, Tana; Niinemets, Ülo; Hõrak, Hanna

doi:10.1111/nph.19215

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…There have been increasing efforts over the past decade or so to unpick the origins of stomatal aperture control. Experimental evidence garnered from diverse species across the land plant phylogeny has increasingly shown stomatal responses to air humidity, light quality and quantity, CO 2 concentrations, and ABA signalling (Doi et al ., 2015; Hõrak et al ., 2017; Grantz et al ., 2019; Kübarsepp et al ., 2020; Cai et al ., 2021; Plackett et al ., 2021; Wuyun et al ., 2023; Meigas et al .). These findings from whole plant, and guard cell, physiology could be interpreted as convergent properties of gas exchange control that arose independently across land plant evolution in response to universally shared environmental cues.…”

Section: Absence Of Evidence Is Not Evidence Of Absencementioning

confidence: 98%

A tail of two horses? Guard cell abscisic acid and carbon dioxide signalling in the Equisetum ferns

Chater

2024

New Phytologist

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Section: Absence Of Evidence Is Not Evidence Of Absencementioning

confidence: 98%

A tail of two horses? Guard cell abscisic acid and carbon dioxide signalling in the Equisetum ferns

Chater

2024

New Phytologist

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“…Stomatal density (SD) is a trait that largely varies among species and has a strong environmental plasticity [4,10,11,13,14]. Current methods for calculating SD often hypothesize that there is no spatial variation in SD across the leaf.…”

Section: Introductionmentioning

confidence: 99%

An Inverse Scaling Relationship between Stomatal Density and Mean Nearest Neighbor Distance: Evidence from a Photinia Hybrid and One of Its Parents

Sun,

Niinemets,

et al. 2023

Plants

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Stomata are involved in transpiration and CO2 uptake by mediating gas exchange between internal plant tissues and the atmosphere. The capacity for gas exchange depends on stomatal density (SD), stomatal size, and pore dimensions. Most published work on stomatal quantification has assumed that stomatal distribution and stomatal density are spatially homogeneous across the leaf, but this assumption has been seldom tested. We selected 32 leaves from a Photinia hybrid, Photinia × fraseri ‘Red Robin’, and one of its parents, P. serratifolia. For each leaf, the leaf surface was divided into three or four equidistant layers along the apical–basal axis, and, in each layer, two positions, one closer to the midrib and the other closer to the leaf margin, were further selected. We calculated SD and mean nearest neighbor distance (MNND) for each lamina section and tested the scaling relationship between SD and MNND of the sampled stomatal centers using reduced major axis protocols. In addition, we calculated the stomatal aggregation index (SAI) for each lamina section to examine the spatial arrangement of stomata at the given size of field of view of 1.2 mm × 0.9 mm. We observed that SD decreased from the lamina apex towards the base for central lamina areas but varied little at leaf margins. An inverse scaling relationship between SD and MNND was observed for both species. This relationship could be used for SD estimation using the rapidly estimated trait, MNND. SAI did not vary significantly throughout leaf lamina, and the numerical values of SAI for all fields of view were greater than one, which indicates significant spatial repulsion between stomata. The study suggests that SD varies across leaf lamina to fine-tune plant water use and maximize carbon gain. However, spatial structures of stomata from different lamina sections exhibit similar patterns (i.e., spatial inhibition between stomata at small scales), probably due to hierarchical leaf vein patterns.

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Assessing accuracy of crop water stress inversion of soil water content all day long

Zhang,

Huang,

Dai

et al. 2024

Precision Agric

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Species‐specific stomatal ABA responses in juvenile ferns grown from spores

Cited by 4 publications

References 54 publications

A tail of two horses? Guard cell abscisic acid and carbon dioxide signalling in the Equisetum ferns

A tail of two horses? Guard cell abscisic acid and carbon dioxide signalling in the Equisetum ferns

An Inverse Scaling Relationship between Stomatal Density and Mean Nearest Neighbor Distance: Evidence from a Photinia Hybrid and One of Its Parents

Assessing accuracy of crop water stress inversion of soil water content all day long

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