Water Deficit Enhances C Export to the Roots in Arabidopsis thaliana Plants with Contribution of Sucrose Transporters in Both Shoot and Roots

Plant Physiology
Mickaël DurandNathalie Pourtau

Abstract

Root high plasticity is an adaptation to its changing environment. Water deficit impairs growth, leading to sugar accumulation in leaves, part of which could be available to roots via sucrose (Suc) phloem transport. Phloem loading is widely described in Arabidopsis (Arabidopsis thaliana), while unloading in roots is less understood. To gain information on leaf-to-root transport, a soil-based culture system was developed to monitor root system architecture in two dimensions. Under water deficit (50% of soil water-holding capacity), total root length was strongly reduced but the depth of root foraging and the shape of the root system were less affected, likely to improve water uptake. (14)CO2 pulse-chase experiments confirmed that water deficit enhanced carbon (C) export to the roots, as suggested by the increased root-to-shoot ratio. The transcript levels of AtSWEET11 (for sugar will eventually be exported transporter), AtSWEET12, and AtSUC2 (for Suc carrier) genes, all three involved in Suc phloem loading, were significantly up-regulated in leaves of water deficit plants, in accordance with the increase in C export from the leaves to the roots. Interestingly, the transcript levels of AtSUC2 and AtSWEET11 to AtSWEET15 were also ...Continue Reading

Citations

Dec 21, 2017·F1000Research·Johannes Liesche, John Patrick
Mar 5, 2019·Molecular Biology Reports·Tinku GautamP K Gupta
Feb 2, 2017·BMC Plant Biology·Eric R SchultzRobert J Ferl
Jun 22, 2019·Journal of Experimental Botany·Catharina V HuberDietmar Funck
Mar 14, 2020·Annual Review of Plant Biology·Eva van ZelmChrista Testerink
Jun 13, 2020·The Plant Journal : for Cell and Molecular Biology·Thibaut BontpartPeter Doerner
Sep 20, 2017·Plant & Cell Physiology·Benjamin T JuliusDavid M Braun
Jan 23, 2020·International Journal of Molecular Sciences·Yanli DuFuti Xie
Mar 11, 2020·International Journal of Molecular Sciences·Vijay BhaskarlaNitin Mantri
Aug 7, 2019·International Journal of Molecular Sciences·Seyed Abdollah HosseiniJean-Claude Yvin
Feb 1, 2016·Functional Plant Biology : FPB·Lucia M Acosta-GamboaArgelia Lorence
Nov 11, 2017·Journal of Experimental Botany·Xiaoqing LiWilliam J Davies
Oct 6, 2020·Plant Direct·Scott A HardingChung-Jui Tsai
Nov 21, 2020·Physiologia Plantarum·Ankush A SaddheSuprasanna Penna
Nov 20, 2020·International Journal of Molecular Sciences·Md Mostafa KamalMatsuo Uemura
Feb 15, 2021·Physiologia Plantarum·Harmeet KaurPrafull Salvi
Feb 21, 2021·Journal of Plant Physiology·Takuya Yoshida, Kazuko Yamaguchi-Shinozaki
Feb 26, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Emna GhouiliGhassen Abid
Apr 27, 2021·Trends in Plant Science·Hongfei LiYanxia Zhang

❮ 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.