Signal coordination before, during and after stomatal closure in response to drought stress

The New Phytologist
Annika E HuberTaryn L Bauerle

Abstract

Signal coordination in response to changes in water availability remains unclear, as does the role of embolism events in signaling drought stress. Sunflowers were exposed to two drought treatments of varying intensity while simultaneously monitoring changes in stomatal conductance, acoustic emissions (AE), turgor pressure, surface-level electrical potential, organ-level water potential and leaf abscisic acid (ABA) concentration. Leaf, stem and root xylem vulnerability to embolism were measured with the single vessel injection technique. In both drought treatments, it was found that AE events and turgor changes preceded the onset of stomatal closure, whereas electrical surface potentials shifted concurrently with stomatal closure. Leaf-level ABA concentration did not change until after stomata were closed. Roots and petioles were equally vulnerable to drought stress based on the single vessel injection technique. However, anatomical analysis of the xylem indicated that the increased AE events were not a result of xylem embolism formation. Additionally, roots and stems never reached a xylem pressure threshold that would initiate runaway embolism throughout the entire experiment. It is concluded that stomatal closure was not embol...Continue Reading

References

May 15, 2001·Plant Physiology·N M HolbrookM A Zwieniecki
May 22, 2002·Journal of Experimental Botany·N Michele HolbrookRana Munns
Jan 1, 1997·Plant Physiology·R. Stahlberg, D. J. Cosgrove
Aug 13, 2003·Plant Physiology·Tim J Brodribb, N Michele Holbrook
Aug 17, 2005·The New Phytologist·M Rob G Roelfsema, Rainer Hedrich
Nov 4, 2006·Plant, Cell & Environment·Tim J Brodribb, N Michele Holbrook
Nov 8, 2006·Plant, Cell & Environment·Julia E PowlesGraham D Farquhar
Feb 1, 2007·Plant, Cell & Environment·Jörg Fromm, Silke Lautner
Aug 23, 2007·The Plant Journal : for Cell and Molecular Biology·Alexander ChristmannErwin Grill
May 10, 2008·Trends in Plant Science·Daniel P Schachtman, Jason Q D Goodger
Apr 14, 2009·Journal of Theoretical Biology·T HölttäE Nikinmaa
Dec 4, 2009·Proceedings of the National Academy of Sciences of the United States of America·Dietmar GeigerRainer Hedrich
Sep 1, 1997·American Journal of Botany·M Canny
Apr 21, 2012·The Plant Cell·Scott A M McAdam, Timothy J Brodribb
Apr 3, 2013·Current Opinion in Plant Biology·Alexander ChristmannJin Huang
Jul 26, 2013·Frontiers in Plant Science·Maciej A ZwienieckiEric T Ahrens
Sep 27, 2013·Frontiers in Plant Science·Peter J Melcher, Maciej A Zwieniecki
May 8, 2014·The New Phytologist·Hannes KollistM Rob G Roelfsema
Jul 25, 2014·Journal of the Royal Society, Interface·A PonomarenkoP Marmottant
Sep 23, 2014·Tree Physiology·Sabine Rosner

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.