The quest for osmosensors in plants

Nongpiur, Ramsong C.; Singla‐Pareek, Sneh L.; Pareek, Ashwani

doi:10.1093/jxb/erz263

Cited by 42 publications

(34 citation statements)

References 122 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intracellular kinase domain plays the central role in signal transduction, which upon binding of a ligand to ECLB, modifies the protein conformation. Various RLK subfamilies such as proline-rich extensin like receptor kinases (PERKs), S-domain containing RLKs, lectin-like RLKs, and wall-associated kinases (WAKs) have been shown to play a role in abiotic stress response (Nongpiur et al, 2019). ABAmediated abiotic stress response of RLKs has been documented in various crops such as Arabidopsis, rice, and Glycine soja.…”

Section: G Protein-coupled Receptors (Gpcrs)mentioning

confidence: 99%

“…TCS for HK mediated osmosensing is already well established in bacteria and yeast. The system consists of a sensory histidine kinase (HIK) and a response regulator (RR) (Nongpiur et al, 2019). In plants presence of a His-containing phosphotransfer (Hpt) protein connects the initial sensory HIK to the ultimate RR while mediating as a signaling module.…”

Section: G Protein-coupled Receptors (Gpcrs)mentioning

confidence: 99%

See 1 more Smart Citation

Engineering Multiple Abiotic Stress Tolerance in Canola, Brassica napus

et al. 2020

View full text Add to dashboard Cite

Impacts of climate change like global warming, drought, flooding, and other extreme events are posing severe challenges to global crop production. Contribution of Brassica napus towards the oilseed industry makes it an essential component of international trade and agroeconomics. Consequences from increasing occurrences of multiple abiotic stresses on this crop are leading to agroeconomic losses making it vital to endow B. napus crop with an ability to survive and maintain yield when faced with simultaneous exposure to multiple abiotic stresses. For an improved understanding of the stress sensing machinery, there is a need for analyzing regulatory pathways of multiple stressresponsive genes and other regulatory elements such as non-coding RNAs. However, our understanding of these pathways and their interactions in B. napus is far from complete. This review outlines the current knowledge of stress-responsive genes and their role in imparting multiple stress tolerance in B. napus. Analysis of network cross-talk through omics data mining is now making it possible to unravel the underlying complexity required for stress sensing and signaling in plants. Novel biotechnological approaches such as transgene-free genome editing and utilization of nanoparticles as gene delivery tools are also discussed. These can contribute to providing solutions for developing climate change resilient B. napus varieties with reduced regulatory limitations. The potential ability of synthetic biology to engineer and modify networks through fine-tuning of stress regulatory elements for plant responses to stress adaption is also highlighted.

show abstract

Section: G Protein-coupled Receptors (Gpcrs)mentioning

confidence: 99%

Section: G Protein-coupled Receptors (Gpcrs)mentioning

confidence: 99%

Engineering Multiple Abiotic Stress Tolerance in Canola, Brassica napus

et al. 2020

View full text Add to dashboard Cite

show abstract

“…K + channel inhibitors also decreased both water flow and expression of PIP aquaporins (Tazawa et al, 2001;Sahr et al, 2005). Finally, there is still an ancient but still valid hypothesis that PIP aquaporins could serve as turgor sensors in the plasma membrane to modulate the K + channel activity and cell water homeostasis (Hill et al, 2004;Nongpiur et al, 2020). Regulation of PIP trafficking appears even more complex.…”

Section: Do Aquaporins Directly or Indirectly Affect Cation Transportmentioning

confidence: 99%

Are Aquaporins Expressed in Stomatal Complexes Promising Targets to Enhance Stomatal Dynamics?

Ding

Chaumont

2020

Front. Plant Sci.

View full text Add to dashboard Cite

The opening and closure of stomata depend on the turgor pressure adjustment by the influx or efflux of ions and water in guard cells. In this process, aquaporins may play important roles by facilitating the transport of water and other small molecules. In this perspective, we consider the potential roles of aquaporins in the membrane diffusion of different molecules (H 2 O, CO 2 , and H 2 O 2), processes dependent on abscisic acid and CO 2 signaling in guard cells. While the limited data already available emphasizes the roles of aquaporins in stomatal movement, we propose additional approaches to elucidate the specific roles of single or several aquaporin isoforms in the stomata and evaluate the perspectives aquaporins might offer to improve stomatal dynamics.

show abstract

“…An existing alignment from 7 was used and additional sequences added. The Arabidopsis PM19L1 protein sequence was used for BLAST searches on proteomes available on Phytozome and other sources (see Tables SI 1,2). No E value cut off was used and all possible sequences were investigated.…”

Section: Phylogenetic Tree Constructionmentioning

confidence: 99%

The conserved Arabidopsis PM19L1 protein functions as an osmosensor and regulator of dormancy and germination

Alexander¹,

Castillejo-Pons

Alsaif

et al. 2020

Preprint

View full text Add to dashboard Cite

During germination, seeds undergo a dramatic transformation in their water content, which increases from around 10% to 90% within 24 hours. Control of water uptake to the embryo is key to the germination process; failure to imbibe sufficiently can result in seed dormancy. This is strongly affected by environmental factors including drought or salinity and can result in reduced crop establishment and yields. However, the osmosensing mechanisms regulating water uptake in plants have not been described. In this work we show that the highly conserved plant plasma membrane protein AWPM19 is a plant osmosensor, regulating germination under osmotic stress. The AWPM19 protein structurally resembles the yeast osmosensor Sho1, with four transmembrane domains, and the Arabidopsis homologue PM19L1 will phenotypically complement the sho1 mutant, showing that it can function as an osmosensor. We find that PM19L1 is highly expressed in the seed and seedling during germination and is located in the plasma membrane. Arabidopsis pm19l1 mutants have reduced germination in the presence of salt or sorbitol. In a striking parallel to osmosensing in yeast, signalling downstream of AWPM19 involves a MAP kinase signal transduction pathway. These results give an indication of how plants are able to sense the availability of water, and has important implications for the study of dormancy, drought and salinity tolerance in crops. Furthermore this provides insight into evolutionary adaptation of plants to a terrestrial environment.

show abstract

The quest for osmosensors in plants

Cited by 42 publications

References 122 publications

Engineering Multiple Abiotic Stress Tolerance in Canola, Brassica napus

Engineering Multiple Abiotic Stress Tolerance in Canola, Brassica napus

Are Aquaporins Expressed in Stomatal Complexes Promising Targets to Enhance Stomatal Dynamics?

The conserved Arabidopsis PM19L1 protein functions as an osmosensor and regulator of dormancy and germination

Contact Info

Product

Resources

About