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Review: Emerging roles of brassinosteroid in nutrient foraging

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Title Review: Emerging roles of brassinosteroid in nutrient foraging
 
Creator Pandey, Anshika
Devi, Loitongbam Lorinda
Singh, Amar Pal
 
Subject Brassinosteroids
Boron deficiency
Root development
Nitrogen limitation
Phosphorus deficiency
Ammonium
 
Description Accepted date: 18 March 2020
Brassinosteroids (BRs) are well-characterized growth hormones that are critical for plant growth, development,
and productivity. Genetic and molecular studies have revealed the key components of BR biosynthesis and
signaling pathways. The membrane-localized BR signaling receptor, BRASSINOSTEROID INSENSITIVE1 (BRI1)
binds directly to its ligand and initiates series of signaling events that led to the activation of BR transcriptional
regulators, BRASSINAZOLE RESISTANT1 (BZR1) and BRI1-ETHYL METHANESULFONATE-SUPPRESSOR1
(BES1/BZR2) to regulate the cellular processes. Insights from Arabidopsis research revealed tissue and cell typespecific roles of BR in controlling cell elongation and maintenance of stem cell niche in roots. More recently, BRs
have gained much attention in regulating the root growth during nutrient deficiency such as nitrogen, phosphorus, and boron. Differential distribution of nutrients in the rhizosphere alters BR hormone levels and signaling to reprogram spatial distribution of root system architecture (RSA) such as a change in primary root
growth, lateral root numbers, length, and angle, root hair formation and elongation. These morpho-physiological
changes in RSA are also known as an adaptive root trait or foraging response of the plant. In this review, we
highlight the role of BRs in regulating RSA to increase root foraging response during fluctuating nutrient
availability.
We acknowledge APS lab members, Dr. Senjuti Sinharoy and Dr.
Jyothilakshmi Vadassery for valuable comments. APS acknowledges the
Department of Biotechnology (DBT) India for Har Govind KhoranaInnovative Young Biotechnologist Award grant (BT/11/IYBA/2018/02)
and DST-SERB, India for the grant (ECR/2018/000526). Anshika
Pandey and Loitongbam Lorinda Devi acknowledge UGC and CSIR for
Fellowship respectively.
 
Date 2020-04-15T17:41:57Z
2020-04-15T17:41:57Z
2020
 
Type Article
 
Identifier Plant Science, 296: 110474
0168-9452
https://doi.org/10.1016/j.plantsci.2020.110474
https://www.sciencedirect.com/science/article/pii/S0168945220300765
http://223.31.159.10:8080/jspui/handle/123456789/1052
 
Language en_US
 
Format application/pdf
 
Publisher Elsevier B.V.