Ethylene regulates fast apoplastic acidification and expansin A transcription during submergence‐induced petiole elongation in <i>Rumex palustris</i>

Vreeburg, Robert A. M.; Benschop, Joris J.; Peeters, Anton J. M.; Colmer, Timothy D.; Ammerlaan, Ankie H.M.; Staal, Marten; Elzenga, J. Theo M.; Staals, Raymond H.J.; Darley, Catherine P.; McQueen‐Mason, Simon J.; Voesenek, Laurentius A. C. J.

doi:10.1111/j.1365-313x.2005.02477.x

Cited by 120 publications

(105 citation statements)

References 65 publications

(183 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…See Supplemental Video S1 for additional detail. Spollen et al, 1993;Pritchard, 1994;Wu and Cosgrove, 2000) and the stimulation of stem elongation in submerged deepwater rice (Oryza sativa) and other plants (Cho and Kende, 1997;Vreeburg et al, 2005). Our findings suggest that increased apoplastic ROS production may play a positive rather than a negative role in regulating the root growth response under severe water stress.…”

Section: Increased Apoplastic Ros In Water-stressed Roots-potential Rmentioning

confidence: 50%

Cell Wall Proteome in the Maize Primary Root Elongation Zone. II. Region-Specific Changes in Water Soluble and Lightly Ionically Bound Proteins under Water Deficit

et al. 2007

View full text Add to dashboard Cite

Previous work on the adaptation of maize (Zea mays) primary roots to water deficit showed that cell elongation is maintained preferentially toward the apex, and that this response involves modification of cell wall extension properties. To gain a comprehensive understanding of how cell wall protein (CWP) composition changes in association with the differential growth responses to water deficit in different regions of the elongation zone, a proteomics approach was used to examine water soluble and loosely ionically bound CWPs. The results revealed major and predominantly region-specific changes in protein profiles between well-watered and water-stressed roots. In total, 152 water deficit-responsive proteins were identified and categorized into five groups based on their potential function in the cell wall: reactive oxygen species (ROS) metabolism, defense and detoxification, hydrolases, carbohydrate metabolism, and other/unknown. The results indicate that stress-induced changes in CWPs involve multiple processes that are likely to regulate the response of cell elongation. In particular, the changes in protein abundance related to ROS metabolism predicted an increase in apoplastic ROS production in the apical region of the elongation zone of water-stressed roots. This was verified by quantification of hydrogen peroxide content in extracted apoplastic fluid and by in situ imaging of apoplastic ROS levels. This response could contribute directly to the enhancement of wall loosening in this region. This large-scale proteomic analysis provides novel insights into the complexity of mechanisms that regulate root growth under water deficit conditions and highlights the spatial differences in CWP composition in the root elongation zone.Roots often continue to grow under water deficits that completely inhibit shoot and leaf elongation (Sharp and Davies, 1979;Westgate and Boyer, 1985), and this is considered an important mechanism of plant adaptation to water-limited conditions (Sharp and Davies, 1989). Investigation of the mechanisms of root growth adaptation to water deficit is important for improving plant performance under drought, because water resources for agriculture are becoming increasingly limited.The physiology of maize (Zea mays) primary root elongation at low water potentials has been studied extensively (for review, see Sharp et al., 2004), which has provided the foundation for an understanding of the complex network of responses involved. Analysis of the relative elongation rate profile within the root elongation zone showed that under severe water deficit, elongation rates are fully maintained in the apical few millimeters but progressively inhibited as cells are displaced further from the root apex (Sharp et al., 1988;Liang et al., 1997). To help understand the maintenance of elongation in the apical region of roots growing under water deficit conditions, Spollen and Sharp (1991) measured the spatial distribution of turgor pressure and found that values were uniformly decreased by over 50% throughout the e...

show abstract

Section: Increased Apoplastic Ros In Water-stressed Roots-potential Rmentioning

confidence: 50%

Cell Wall Proteome in the Maize Primary Root Elongation Zone. II. Region-Specific Changes in Water Soluble and Lightly Ionically Bound Proteins under Water Deficit

et al. 2007

View full text Add to dashboard Cite

show abstract

“…In R. palustris, ethylene accumulation reduced abscisic acid (ABA) levels, auxin redistribution within the plant, and cell wall loosening (Cox et al, 2004;Benschop et al, 2005;Vreeburg et al, 2005). Continuation of elongation was shown to then require subsequent enhancement of gibberellic acid (GA) biosynthesis (Benschop et al, 2006).…”

Section: Hormonal Regulation Of Petiole Growth In R Acetosa and R Pmentioning

confidence: 99%

Two Rumex Species from Contrasting Hydrological Niches Regulate Flooding Tolerance through Distinct Mechanisms

et al. 2013

View full text Add to dashboard Cite

ORCID ID: 0000-0002-6940-0657 (R.S.).Global climate change has increased flooding events, which affect both natural vegetation dynamics and crop productivity. The flooded environment is lethal for most plant species because it restricts gas exchange and induces an energy and carbon crisis. Flooding survival strategies have been studied in Oryza sativa, a cultivated monocot. However, our understanding of plant adaptation to natural flood-prone environments remains scant, even though wild plants represent a valuable resource of tolerance mechanisms that could be used to generate stress-tolerant crops. Here we identify mechanisms that mediate the distinct flooding survival strategies of two related wild dicot species: Rumex palustris and Rumex acetosa. Whole transcriptome sequencing and metabolite profiling reveal flooding-induced metabolic reprogramming specific to R. acetosa. By contrast, R. palustris uses the early flooding signal ethylene to increase survival by regulating shade avoidance and photomorphogenesis genes to outgrow submergence and by priming submerged plants for future low oxygen stress. These results provide molecular resolution of flooding survival strategies of two species occupying distinct hydrological niches. Learning how these contrasting flood adaptive strategies evolved in nature will be instrumental for the development of stress-tolerant crop varieties that deliver enhanced yields in a changing climate.

show abstract

“…In rice (Oryza sativa), for example, expansins are differentially regulated by developmental, hormonal, and environmental signals (Cho and Kende, 1997). In R. palustris, in response to flooding, ethylene caused the up-regulation of one expansin gene out of 13 (Vreeburg et al, 2005). Specific expansins are also up-regulated during fruit ripening (Rose et al, 1997), abscission (Belfield et al, 2005), root hair development (Cho and Cosgrove, 2002), and drought (Jones and McQueen-Mason, 2004) responses, to cite a few examples.…”

Section: Regulation Of Expansin and Xth Activity In Response To Canopmentioning

confidence: 99%

“…However, some studies also suggest that the correlation between expansin activity and growth does not always hold (Caderas et al, 2000;Reidy et al, 2001). Expansins are strongly regulated during plant responses to environmental stresses, such as drought (Jones and McQueen-Mason, 2004;Zhu et al, 2007), flooding (Cho and Kende, 1997;Colmer et al, 2004;Vreeburg et al, 2005), and response to pathogens (Ding et al, 2008;Fudali et al, 2008).…”

mentioning

confidence: 99%

The Regulation of Cell Wall Extensibility during Shade Avoidance: A Study Using Two Contrasting Ecotypes of Stellaria longipes

Sasidharan¹,

Chinnappa²,

Voesenek³

et al. 2008

Plant Physiol.

Self Cite

View full text Add to dashboard Cite

Shade avoidance in plants involves rapid shoot elongation to grow toward the light. Cell wall-modifying mechanisms are vital regulatory points for control of these elongation responses. Two protein families involved in cell wall modification are expansins and xyloglucan endotransglucosylase/hydrolases. We used an alpine and a prairie ecotype of Stellaria longipes differing in their response to shade to study the regulation of cell wall extensibility in response to low red to far-red ratio (R/FR), an early neighbor detection signal, and dense canopy shade (green shade: low R/FR, blue, and total light intensity). Alpine plants were nonresponsive to low R/FR, while prairie plants elongated rapidly. These responses reflect adaptation to the dense vegetation of the prairie habitat, unlike the alpine plants, which almost never encounter shade. Under green shade, both ecotypes rapidly elongate, showing that alpine plants can react only to a deep shade treatment. Xyloglucan endotransglucosylase/hydrolase activity was strongly regulated by green shade and low blue light conditions but not by low R/FR. Expansin activity, expressed as acid-induced extension, correlated with growth responses to all light changes. Expansin genes cloned from the internodes of the two ecotypes showed differential regulation in response to the light manipulations. This regulation was ecotype and light signal specific and correlated with the growth responses. Our results imply that elongation responses to shade require the regulation of cell wall extensibility via the control of expansin gene expression. Ecotypic differences demonstrate how responses to environmental stimuli are differently regulated to survive a particular habitat.

show abstract

Ethylene regulates fast apoplastic acidification and expansin A transcription during submergence‐induced petiole elongation in Rumex palustris

Cited by 120 publications

References 65 publications

Cell Wall Proteome in the Maize Primary Root Elongation Zone. II. Region-Specific Changes in Water Soluble and Lightly Ionically Bound Proteins under Water Deficit

Cell Wall Proteome in the Maize Primary Root Elongation Zone. II. Region-Specific Changes in Water Soluble and Lightly Ionically Bound Proteins under Water Deficit

Two Rumex Species from Contrasting Hydrological Niches Regulate Flooding Tolerance through Distinct Mechanisms

The Regulation of Cell Wall Extensibility during Shade Avoidance: A Study Using Two Contrasting Ecotypes of Stellaria longipes

Contact Info

Product

Resources

About