The role of stomata in sensing and driving environmental change

Hetherington, Alistair M.; Woodward, F. I.

doi:10.1038/nature01843

Cited by 1,960 publications

(1,691 citation statements)

References 89 publications

Supporting

Mentioning

1,452

Contrasting

Unclassified

Order By: Relevance

“…The overall dynamics of gas exchange on the leaf surface is indicated by stomatal conductivity. For example, the intensity of the gas exchange processes per unit leaf area strongly decreases during drought and salt stress, as well as under the influence of different air pollutants (Allen and Pearcy, 2000;Medrano et al, 2002;Hetherington and Woodward, 2003).…”

Section: Discussionmentioning

confidence: 99%

Chemical Composition of Celandine (Chelidonium majus L.) Extract and its Effects on Botrytis tulipae (Lib.) Lind Fungus and the Tulip

Pârvu

Vlase

Fodorpataki

et al. 2013

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

In this study, the content of chelidonine and berberine alkaloids, and sterols and phenols in the Chelidonium majus plant extract were analyzed. Subsequently, the effects of the extract on the germination and growth of Botrytis tulipae fungus on nutritive medium were compared to the effects of fluconazole. The plant extract was used at the minimum inhibitory concentration on B. tulipae developed in tulip leaves and the in vivo effects were investigated. The influence of different concentrations of C. majus extract on the physiological processes of the tulip (gas exchange parameters, photosynthetic light use efficiency, and induced chlorophyll fluorescence) were also tested to assess the applicability of the extract for the protection of ornamental plants against fungal infection. Our results demonstrated that 2% celandine extract does not significantly change the gas exchange parameters (transpiration rate, carbon dioxide uptake, and stomatal conductivity) of leaves exposed for 2 h, and does not interfere with the photochemical processes in the leaves. However, in higher concentrations, it increases the transpiration rate and net carbon dioxide influx. At concentrations of 15% and 20%, the extract lowers the potential quantum yield efficiency of photosystem II and the vitality index of the photosynthetic apparatus. Therefore we recommend the use of lower concentrations (≤6%) of celandine extract for the biological protection of tulips against gray mold.

show abstract

Section: Discussionmentioning

confidence: 99%

Chemical Composition of Celandine (Chelidonium majus L.) Extract and its Effects on Botrytis tulipae (Lib.) Lind Fungus and the Tulip

Pârvu

Vlase

Fodorpataki

et al. 2013

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

show abstract

“…G as exchange in land plants is mediated by stomata, small pores formed by guard cells in the epidermal tissues of the surfaces of leaves and stems 1,2 . Stomatal development and density are negatively regulated by membrane proteins, including too many mouths (TMM) and ERECTA family of receptor-like kinases (ERf), which contain ER, ERL1 and ERL2 (refs 3,4).…”

mentioning

confidence: 99%

The NMR structure of stomagen reveals the basis of stomatal density regulation by plant peptide hormones

2011

View full text Add to dashboard Cite

stomatal development in plants is regulated by defensin-like secretory epidermal patterning factor (EPF) peptide hormones. only one of these, stomagen, is a positive regulator, whereas EPF1, EPF2, and possibly others are negative regulators. Here we explore the structure-function relationships of EPFs, by integrating nmR and semi-in vitro stomagen experiments. We show that stomagen is composed of a loop and a scaffold containing three disulphide bonds. A mutant composed of the stomagen loop and the EPF2 scaffold positively regulates the stomatal density on Arabidopsis cotyledons. The reciprocal mutant composed of the EPF2 loop and the stomagen scaffold acts negatively. Deletion of the disulphide bond introduces unfolding and inactivity. our results suggest that the loop confers the functional specificity of EPFs and that the scaffold is structurally required for their activity. This structural decomposition approach to elucidating the functional site could be adapted for the analysis of other cysteine-rich peptide families.

show abstract

“…Stomata are centrally important to the regulation of CO 2 uptake by leaves (Jones 1998;Hetherington & Woodward 2003). In addition to influencing productivity and water loss at leaf and canopy scales, stomatal conductance is also an important determinant of D .…”

Section: Introductionmentioning

confidence: 99%

Productivity, carbon isotope discrimination and leaf traits of trees of Eucalyptus globulus Labill. in relation to water availability

Macfarlane

Adams

White

2004

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

The role of stomata in sensing and driving environmental change

Cited by 1,960 publications

References 89 publications

Chemical Composition of Celandine (<i>Chelidonium majus</i> L.) Extract and its Effects on <i>Botrytis tulipae</i> (Lib.) Lind Fungus and the Tulip

Chemical Composition of Celandine (<i>Chelidonium majus</i> L.) Extract and its Effects on <i>Botrytis tulipae</i> (Lib.) Lind Fungus and the Tulip

The NMR structure of stomagen reveals the basis of stomatal density regulation by plant peptide hormones

Productivity, carbon isotope discrimination and leaf traits of trees of Eucalyptus globulus Labill. in relation to water availability

Contact Info

Product

Resources

About