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1. StomataCounter: a neural network for automatic stomata identification and counting

Author:
Fetter, Karl C.; Eberhardt, Sven; Barclay, Rich S.; Wing, Scott; Keller, Stephen R.
Source:
Thenew phytologist 2019 v.223 no.3 pp. 1671-1681
ISSN:
0028-646X
Subject:
stomata,   etc   ; Ginkgo; Internet; automation;     Show all 4 Subjects
Abstract:
... Stomata regulate important physiological processes in plants and are often phenotyped by researchers in diverse fields of plant biology. Currently, there are no user‐friendly, fully automated methods to perform the task of identifying and counting stomata, and stomata density is generally estimated by manually counting stomata. We introduce StomataCounter, an automated stomata counting system usin ...
DOI:
10.1111/nph.15892

2. Chemical polyploidization of Chrysanthemum boreale

Author:
Hoang, Thanh Kim; Hwang, Yoon-Jung; Lim, Jin-Hee
Source:
Plant cell, tissue, and organ culture 2020 v.140 no.3 pp. 677-683
ISSN:
0167-6857
Subject:
stomata,   etc   ; Chrysanthemum boreale; chromosomes; colchicine; diploidy; mutagens; shoots; tetraploidy;     Show all 8 Subjects
Abstract:
... Chrysanthemum boreale (Asteraceae) is a wild flowering plant that has both ornamental and herbal uses. In the present study, colchicine was used as a chemical mutagen to induce polyploidy using in vitro shoots, which were cultured from C. boreale (2n = 2x = 18) nodal segments, and the efficacy of various colchicine concentrations and treatment durations were investigated. The results demonstrated ...
DOI:
10.1007/s11240-019-01761-w

3. The developmental relationship between stomata and mesophyll airspace

Author:
Baillie, Alice L.; Fleming, Andrew J.
Source:
Thenew phytologist 2020 v.225 no.3 pp. 1120-1126
ISSN:
0028-646X
Subject:
stomata,   etc   ; gas exchange; leaf development; mesophyll; water use efficiency;     Show all 5 Subjects
Abstract:
... The quantitative and spatial coordination of stomatal pores in the epidermis and airspaces in the underlying mesophyll tissue is vital for efficient gas exchange in the leaf. The mechanisms that determine the distribution of stomata in the epidermis have been studied extensively, but how this relates to the regulation of mesophyll airspace configuration is poorly understood. Recent studies have in ...
DOI:
10.1111/nph.16341

4. Soil Rather Than Xylem Vulnerability Controls Stomatal Response to Drought

Author:
Carminati, Andrea; Javaux, Mathieu
Source:
Trends in plant science 2020 v.25 no.9 pp. 868-880
ISSN:
1360-1385
Subject:
stomata,   etc   ; drought; fluid mechanics; hydraulic conductivity; models; plant response; rhizosphere; roots; stomatal movement; transpiration; xylem;     Show all 11 Subjects
Abstract:
... The current trend towards linking stomata regulation to plant hydraulics emphasizes the role of xylem vulnerability. Using a soil–plant hydraulic model, we show that xylem vulnerability does not trigger stomatal closure in medium-wet to dry soils and we propose that soil hydraulic conductivity loss is the primary driver of stomatal closure. This finding has two key implications: transpiration resp ...
DOI:
10.1016/j.tplants.2020.04.003

5. H2O2, Ca2+, and K+ in subsidiary cells of maize leaves are involved in regulatory signaling of stomatal movement

Author:
Zhang, Li; Li, Dongyang; Yao, Yaqin; Zhang, Suiqi
Source:
Plant physiology and biochemistry 2020 v.152 pp. 243-251
ISSN:
0981-9428
Subject:
stomata,   etc   ; Zea mays; calcium; calcium chloride; corn; guard cells; hydrogen peroxide; ions; potassium; stomatal movement;     Show all 10 Subjects
Abstract:
... The stomata of maize (Zea mays) contain a pair of guard cells and a pair of subsidiary cells. To determine whether H₂O₂, Ca²⁺, and K⁺ in subsidiary cells were involved in stomatal movement, we treated four-week-old maize (Zhengdan 958) leaves with H₂O₂, diphenylene iodonium (DPI), CaCl₂, and LaCl₃. Changes in content and distribution of H₂O₂, Ca²⁺, and K⁺ during stomatal movement were observed. Wh ...
DOI:
10.1016/j.plaphy.2020.04.045

6. Increased stomatal conductance induces rapid changes to photosynthetic rate in response to naturally fluctuating light conditions in rice

Author:
Yamori, Wataru; Kusumi, Kensuke; Iba, Koh; Terashima, Ichiro
Source:
Plant, cell and environment 2020 v.43 no.5 pp. 1230-1240
ISSN:
0140-7791
Subject:
stomata,   etc   ; Oryza sativa; carbon dioxide; environmental factors; light intensity; mutants; photosynthesis; rice; stomatal conductance; stomatal movement;     Show all 10 Subjects
Abstract:
... A close correlation between stomatal conductance and the steady‐state photosynthetic rate has been observed for diverse plant species under various environmental conditions. However, it remains unclear whether stomatal conductance is a major limiting factor for the photosynthetic rate under naturally fluctuating light conditions. We analysed a SLAC1 knockout rice line to examine the role of stomat ...
DOI:
10.1111/pce.13725

7. Ozone-induced change in the relationship between stomatal conductance and net photosynthetic rate is a factor determining cumulative stomatal ozone uptake by Fagus crenata seedlings

Author:
Kinose, Yoshiyuki; Fukamachi, Yoshinobu; Watanabe, Makoto; Izuta, Takeshi
Source:
Trees 2020 v.34 no.2 pp. 445-454
ISSN:
0931-1890
Subject:
stomata,   etc   ; Fagus crenata; air; carboxylation; growing season; ozone; photosynthesis; seedlings; simulation models; stomatal conductance; trees;     Show all 11 Subjects
Abstract:
... KEY MESSAGE: The change in the relationship between the net photosynthetic rate and stomatal conductance by exposure to ozone is a factor determining cumulative ozone uptake via stomata in Fagus crenata seedlings. Stomatal ozone (O₃) uptake, one of the key factors determining the impact of O₃ on trees, has been estimated using a coupled model of photosynthesis and stomatal conductance. Exposure to ...
DOI:
10.1007/s00468-019-01927-1

8. Light Regulation of Stomatal Development and Patterning: Shifting the Paradigm from Arabidopsis to Grasses

Author:
Wei, Hongbin; Kong, Dexin; Yang, Juan; Wang, Haiyang
Source:
Plant communications 2020 v.1 no.2 pp. 100030
ISSN:
2590-3462
Subject:
stomata,   etc   ; Arabidopsis; breeding; crops; environmental factors; gas exchange; grasses; high density planting;     Show all 8 Subjects
Abstract:
... The stomatal pores of plant leaves control gas exchange with the environment. Stomatal development is prevised regulated by both internal genetic programs and environmental cues. Among various environmental factors, light regulation of stomata formation has been extensively studied in Arabidopsis. In this review, we summarize recent advances in the genetic control of stomata development and its re ...
DOI:
10.1016/j.xplc.2020.100030

9. Photo- and Thermosensitive Polymer Membrane with a Tunable Microstructure Doped with Graphene Oxide Nanosheets and Poly(N-isopropylacrylamide) for the Application of Light-Cleaning

Author:
Cao, Rong; Qin, Mengmeng; Liu, Chang; Li, Shuangwen; Guo, Peili; Han, Guoying; Hu, Xiaohui; Feng, Wei; Chen, Li
Source:
ACS applied materials & interfaces 2020 v.12 no.12 pp. 14352-14364
ISSN:
1944-8252
Subject:
stomata,   etc   ; cleaning; filtration; graphene oxide; light intensity; lighting; microstructure; nanosheets; polymers; shrinkage; temperature; thermosensitivity;     Show all 12 Subjects
Abstract:
... Traditional polymer membranes exhibit a constant structure that makes adjustment of the filtration process difficult, such as flux changing and contaminant cleaning. Inspired by the automatically closing behavior of leaf stomata under strong light, we prepared a membrane with thermo- and photosensitivities, whose microstructure, as well as filtration properties, could be controlled by adjusting th ...
DOI:
10.1021/acsami.0c00410

10. Optimal stomatal drought response shaped by competition for water and hydraulic risk can explain plant trait covariation

Author:
Lu, Yaojie; Duursma, Remko A.; Farrior, Caroline E.; Medlyn, Belinda E.; Feng, Xue
Source:
Thenew phytologist 2020 v.225 no.3 pp. 1206-1217
ISSN:
0028-646X
Subject:
stomata,   etc   ; carbon; drought; gas exchange; models; opportunity costs; photosynthesis; rain; risk; stomatal movement; transpiration; xylem;     Show all 12 Subjects
Abstract:
... The classical theory of stomatal optimization stipulates that stomata should act to maximize photosynthesis while minimizing transpiration. This theory, despite its remarkable success in reproducing empirical patterns, does not account for the fact that the available water to plants is dynamically regulated by plants themselves, and that plants compete for water in most locations. Here, we develop ...
DOI:
10.1111/nph.16207

11. Role of Stomata in Adaptation of Plantago maritima L. Plants to Tidal Dynamics on the White Sea Coast

Author:
Markovskaya, E. F.; Gulyaeva, E. N.
Source:
Russian journal of plant physiology 2020 v.67 no.1 pp. 68-75
ISSN:
1021-4437
Subject:
stomata,   etc   ; Plantago maritima; circadian rhythm; coasts; fluorescence; littoral zone; stomatal conductance; tides; yttrium;     Show all 9 Subjects
Abstract:
... Structural and functional traits in leaves of sea plantain (Plantago maritima L.) inhabiting intertidal and supratidal zones of the White Sea coast were studied. At the intertidal, the plants were found to have smaller and thicker leaves with more frequent stomata and thinner cover tissues in comparison with the plants collected from the supratidal. Leaf fluorescence and stomatal conductance obeye ...
DOI:
10.1134/S1021443719060086

12. Assessment of leaf micromorphology after full desiccation of resurrection plants

Author:
Vassileva, Valya; Moyankova, Daniela; Dimitrova, Anna; Mladenov, Petko; Djilianov, Dimitar
Source:
Plant biosystems 2019 v.153 no.1 pp. 108-117
ISSN:
1724-5575
Subject:
stomata,   etc   ; microscopy; microstructure; drought tolerance; trichomes; mesophyll;     Show all 6 Subjects
Abstract:
... Resurrection plants are unique among higher plants because of their ability to withstand long periods of dehydration without damages. In this study, leaf epidermis and palisade mesophyll of three resurrection species, Haberlea rodopensis, Ramonda serbica and Ramonda myconi, grown under full desiccation and benign conditions, were analyzed by differential interference contrast microscopy. Detailed ...
DOI:
10.1080/11263504.2018.1473306

13. Microtubes with Complex Cross Section Fabricated by C-Shaped Bessel Laser Beam for Mimicking Stomata That Opens and Closes Rapidly

Author:
Pan, Deng; Cai, Ze; Ji, Shengyun; Fan, Shengying; Wang, Pengrui; Lao, Zhaoxin; Yang, Liang; Ni, Jincheng; Wang, Chaowei; Li, Jiawen; Hu, Yanlei; Wu, Dong; Chen, Shaochen; Chu, JiaRu
Source:
ACS applied materials & interfaces 2018 v.10 no.42 pp. 36369-36376
ISSN:
1944-8252
Subject:
stomata,   etc   ; microparticles; polymerization; solvents;     Show all 4 Subjects
Abstract:
... This article presents a new method for fabricating complex cross-sectional microtubes with a high aspect ratio at micro/nanoscale. The microtubes are directly written in a photoresist using a femtosecond pulsed laser combined with a spatial light modulator (SLM). A new method for generating a C-shaped Bessel beam by modifying the Bessel beams with a SLM is reported for the first time. Using this g ...
DOI:
10.1021/acsami.8b11173

14. One-step and large-scale fabrication of flexible and wearable humidity sensor based on laser-induced graphene for real-time tracking of plant transpiration at bio-interface

Author:
Lan, Lingyi; Le, Xianhao; Dong, Hanyong; Xie, Jin; Ying, Yibin; Ping, Jianfeng
Source:
Biosensors & bioelectronics 2020 v.165 pp. 112360
ISSN:
0956-5663
Subject:
stomata,   etc   ; biosensors; electrodes; electronics; environmental monitoring; graphene; graphene oxide; humans; humidity; hysteresis; physiological state; plant damage; transpiration;     Show all 13 Subjects
Abstract:
... The rapidly growing demand for humidity sensing in various applications such as noninvasive epidermal sensing, water status tracking of plants, and environmental monitoring has triggered the development of high-performance humidity sensors. In particular, timely communication with plants to understand their physiological status may facilitate preventing negative influence of environmental stress a ...
DOI:
10.1016/j.bios.2020.112360

15. Basal stomatal aperture is regulated by GA-DELLAs in Arabidopsis

Author:
Sukiran, Nur Afiqah; Steel, Patrick G.; Knight, Marc R.
Source:
Journal of plant physiology 2020 v.250 pp. 153182
ISSN:
0176-1617
Subject:
stomata,   etc   ; Arabidopsis; Solanum lycopersicum; abscisic acid; drought tolerance; gas exchange; gibberellins; hormones; plant growth; receptors; stomatal movement; tomatoes; water conservation;     Show all 13 Subjects
Abstract:
... Stomatal aperture is tightly regulated in order to achieve the best compromise between gas exchange and water conservation. Steady-state (basal) stomatal aperture is therefore understandably a key component in plant fitness. It has been shown previously in tomato that DELLA proteins act as positive regulators of closure of stomata, and their action is enhanced by the hormone ABA, which is itself i ...
DOI:
10.1016/j.jplph.2020.153182

16. Comparative Contribution of СО2/Н2О Exchange Components to the Process of Adaptation to Drought in Xero-Halophytes from the Family Chenopodiaceae with Different Types of Photosynthesis

Author:
Rakhmankulova, Z. F.; Shuyskaya, E. V.; Prokofieva, M. Yu.; Borovkov, A. M.; Voronin, P. Yu.
Source:
Russian journal of plant physiology 2020 v.67 no.3 pp. 494-506
ISSN:
1021-4437
Subject:
stomata,   etc   ; Atriplex; aspartic acid; drought; drought tolerance; electrons; osmotic stress; photorespiration; photosystem I; proline; stomatal movement; transpiration;     Show all 12 Subjects
Abstract:
... Components of СО₂/Н₂О exchange (rates of apparent photosynthesis, transpiration, and dark respiration), as well as efficiency of photosystem I, growth rate, and proline content, were investigated in plants of the С₃ species (Atriplex verrucifera M. Bieb), two populations of the С₄ species (A. tatarica L.), and two populations of the intermediate С₃–С₄ species (Sedobassia sedoides (Pall.) Freitag & ...
DOI:
10.1134/S102144372003019X

17. New insights on stomata analysis of European conifers 65 years after the pioneering study of Werner Trautmann (1953)

Author:
Finsinger, Walter; Tinner, Willy
Source:
Vegetation history and archaeobotany 2020 v.29 no.3 pp. 393-406
ISSN:
0939-6314
Subject:
stomata,   etc   ; Abies; Cedrus; Cupressus; Juniperus; Larix; Picea; Pinus; Taxus; conifers; paleoecology; pollen analysis; uncertainty; Europe; Mediterranean region; Northern European region;     Show all 16 Subjects
Abstract:
... Conifer-stomata analysis is an essential part of the palaeoecological toolbox because it allows the determination of the local presence of plant populations with a lower degree of uncertainty than pollen analysis. Although the European postglacial pool of conifer taxa is broad, stomata morphologies for only few taxa have been investigated. Prior stomata morphology studies focused on taxa having wi ...
DOI:
10.1007/s00334-019-00754-1

18. Role of leaves in methane emission from sacred lotus (nelumbo nucifera)

Author:
Riya, S.; Sun, H.; Furuhata, H.; Shimamura, M.; Nasu, H.; Imano, R.; Zhou, S.; Hosomi, M.
Source:
Aquatic botany 2020 v.163 pp. 103203
ISSN:
0304-3770
Subject:
stomata,   etc   ; Nelumbo nucifera; air; diurnal variation; greenhouse gas emissions; leaf blade; methane; methane production; rhizomes; tanks; wetland plants;     Show all 11 Subjects
Abstract:
... Sacred lotus (Nelumbo nucifera) is known to vent pressurized air in the leaf blade through stomata on the central plate of the leaf via the rhizome. This study measured diurnal CH₄ emissions from lotus-cultivated in tanks during July and August 2016. CH₄ emissions from the central plate of leaves of different age were also evaluated. Average daily CH₄ fluxes of lotus-cultivated tanks were 23.1 ± 5 ...
DOI:
10.1016/j.aquabot.2020.103203

19. Water use strategy affects avoidance of ozone stress by stomatal closure in Mediterranean trees—A modelling analysis

Author:
Hoshika, Yasutomo; Fares, Silvano; Pellegrini, Elisa; Conte, Adriano; Paoletti, Elena
Source:
Plant, cell and environment 2020 v.43 no.3 pp. 611-623
ISSN:
0140-7791
Subject:
stomata,   etc   ; carbon dioxide; carbon dioxide fixation; drought; forest trees; growing season; models; oxidative stress; ozone; photosynthesis; stomatal movement; water stress;     Show all 12 Subjects
Abstract:
... Both ozone (O₃) and drought can limit carbon fixation by forest trees. To cope with drought stress, plants have isohydric or anisohydric water use strategies. Ozone enters plant tissues through stomata. Therefore, stomatal closure can be interpreted as avoidance to O₃ stress. Here, we applied an optimization model of stomata involving water, CO₂, and O₃ flux to test whether isohydric and anisohydr ...
DOI:
10.1111/pce.13700

20. The influence of stomatal morphology and distribution on photosynthetic gas exchange

Author:
Harrison, Emily L.; Arce Cubas, Lucia; Gray, Julie E.; Hepworth, Christopher
Source:
Theplant journal 2020 v.101 no.4 pp. 768-779
ISSN:
0960-7412
Subject:
stomata,   etc   ; C3 photosynthesis; carbon dioxide; carbon dioxide fixation; chloroplasts; energy; environmental factors; gas exchange; light intensity; solar energy; stomatal conductance;     Show all 11 Subjects
Abstract:
... The intricate and interconnecting reactions of C₃ photosynthesis are often limited by one of two fundamental processes: the conversion of solar energy into chemical energy, or the diffusion of CO₂ from the atmosphere through the stomata, and ultimately into the chloroplast. In this review, we explore how the contributions of stomatal morphology and distribution can affect photosynthesis, through c ...
DOI:
10.1111/tpj.14560
PubMed:
31583771
PubMed Central:
PMC7065165