Inositol-requiring enzyme 1 affects meristematic division in roots under moderate salt stress in Arabidopsis

Iwata, Yuji; Yagi, Fumika; Saito, Sae; Mishiba, Kei‐ichiro; Koizumi, Nozomu

doi:10.5511/plantbiotechnology.17.0615a

Cited by 3 publications

(2 citation statements)

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“…Given the polyploid nature of the rapeseed genome, the gene content of the main QTL regions was analyzed to seek possible homoeology between the numerous QTLs. In some main QTL regions stable across N levels, BnaA06p33930 (At2g17520, INOSITOL REQUIERING ENZYME 1, IRE1) plays a role in the maintenance of root meristems under salt stress (Iwata et al 2017); BnaA07p31500 (At1g69588, CLAVATA3/ESR-RELATED 45, CLE45) could be involved in protophloem cells fate, thereby affecting root meristem growth (Depuydt et al 2013). In addition, some nitrate transporters were identi ed in main region Figure 3…”

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confidence: 99%

Genetic control of root morphological plasticity in response to nitrogen across rapeseed diversity

Haelterman,

Louvieaux,

Chiodi

et al. 2023

Preprint

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Rapeseed (Brassica napus L.) is an oleaginous crop of great economic value but with considerable nitrogen requirement. Breeding for root systems efficiently taking up nitrogen from soil could be a lever to ensure genetic gains for producing rapeseed more sustainably. This study aims at identifying genomic regions regulating root morphology in response to nitrate availability. The natural variability offered by a set of 300 inbred lines was screened. Seedlings grew hydroponically with low or elevated nitrate levels. On average for the diversity panel, low nitrate level increased the root-to-shoot biomass ratio and stimulated the lateral root outgrowth. A large phenotypic variation was observed, along with important heritability values and genotypic effects, but poor genotype-by-nitrogen interactions. Genome-wide association study and bulk segregant analysis were employed to identify loci regulating traits of biomass production and root morphology. The first approach identified 1,305 SNPs, associated with 15 phenotypic traits. These SNPs clustered into 26 QTLs, with seven of them distributed on chromosome A07. Some 14 QTLs were stable across nitrate levels. The second approach was selecting segregant individuals from the tails of the phenotypic distribution of an experimental F2 population, deriving from two accessions with a contrasting lateral root development. Six genomic regions showed allele frequency differences between the two bulks above 0.15, including one significant QTL detected on A06. Some genes involved in root organogenesis coincided with QTL regions. This study provides selection targets for potentially redesigning root morphology in rapeseed.

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Section: )mentioning

confidence: 99%

Genetic control of root morphological plasticity in response to nitrogen across rapeseed diversity

Haelterman,

Louvieaux,

Chiodi

et al. 2023

Preprint

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“…Also, it has been reported that bZIP60 overexpression has a positive effect in plant tolerance to salt stress ( Fujita et al, 2007 ). Moreover, it has been recently reported that IRE1 also could play a role in plant response to salt stress, specifically in the maintenance of the root meristem under salt stress ( Iwata et al, 2017 ). Later, Babitha et al (2015) described that overexpression of bZIP60 from Finger millet ( Eleusine coracana L.) in tobacco plants enhanced tolerance to salt, osmotic, drought and chemical induced ER stress.…”

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confidence: 99%

The Endoplasmic Reticulum Role in the Plant Response to Abiotic Stress

Reyes-Impellizzeri

Moreno

2021

Front. Plant Sci.

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The endoplasmic reticulum (ER) is the organelle where one third of the proteins of a cell are synthetized. Several of these proteins participate in the signaling and response of cells, tissues, or from the organism to the environment. To secure the proper synthesis and folding of these proteins, or the disposal of unfolded or misfolded proteins, the ER has different mechanisms that interact and regulate each other. These mechanisms are known as the ER quality control (ERQC), ER-associated degradation (ERAD) and the unfolded protein response (UPR), all three participants of the maintenance of ER protein homeostasis or proteostasis. Given the importance of the client proteins of these ER mechanisms in the plant response to the environment, it is expected that changes or alterations on their components have an impact on the plant response to environmental cues or stresses. In this mini review, we focus on the impact of the alteration of components of ERQC, ERAD and UPR in the plant response to abiotic stresses such as drought, heat, osmotic, salt and irradiation. Also, we summarize findings from recent publications looking for a connection between these processes and their possible client(s) proteins. From this, we observed that a clear connection has been established between the ERAD and UPR mechanisms, but evidence that connects ERQC components to these both processes or their possible client(s) proteins is still lacking. As a proposal, we suggest the use of proteomics approaches to uncover the identity of these proteins and their connection with ER proteostasis.

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An ER-anchored enzyme of GhIRE1 negatively responding to salt tolerance in Gossypium hirsutum L.

Wang

Chen

et al. 2023

Environmental and Experimental Botany

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Inositol-requiring enzyme 1 affects meristematic division in roots under moderate salt stress in Arabidopsis

Cited by 3 publications

References 32 publications

Genetic control of root morphological plasticity in response to nitrogen across rapeseed diversity

Genetic control of root morphological plasticity in response to nitrogen across rapeseed diversity

The Endoplasmic Reticulum Role in the Plant Response to Abiotic Stress

An ER-anchored enzyme of GhIRE1 negatively responding to salt tolerance in Gossypium hirsutum L.

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