| RRC ID |
77515
|
| 著者 |
Cajero-Sanchez W, Aceves-Garcia P, Fernández-Marcos M, Gutiérrez C, Rosas U, García-Ponce B, Álvarez-Buylla ER, Sánchez MP, Garay-Arroyo A.
|
| タイトル |
Natural Root Cellular Variation in Responses to Osmotic Stress in Arabidopsis thaliana Accessions.
|
| ジャーナル |
Genes (Basel)
|
| Abstract |
Arabidopsis naturally occurring populations have allowed for the identification of considerable genetic variation remodeled by adaptation to different environments and stress conditions. Water is a key resource that limits plant growth, and its availability is initially sensed by root tissues. The root's ability to adjust its physiology and morphology under water deficit makes this organ a useful model to understand how plants respond to water stress. Here, we used hyperosmotic shock stress treatments in different Arabidopsis accessions to analyze the root cell morphological responses. We found that osmotic stress conditions reduced root growth and root apical meristem (RAM) size, promoting premature cell differentiation without affecting the stem cell niche morphology. This phenotype was accompanied by a cluster of small epidermal and cortex cells with radial expansion and root hairs at the transition to the elongation zone. We also found this radial expansion with root hairs when plants are grown under hypoosmotic conditions. Finally, root growth was less affected by osmotic stress in the Sg-2 accession followed by Ws, Cvi-0, and Col-0; however, after a strong osmotic stress, Sg-2 and Cvi-0 were the most resilience accessions. The sensitivity differences among these accessions were not explained by stress-related gene expression. This work provides new cellular insights on the Arabidopsis root phenotypic variability and plasticity to osmotic stress.
|
| 巻・号 |
10(12)
|
| 公開日 |
2019-11-29
|
| DOI |
10.3390/genes10120983
|
| PII |
genes10120983
|
| PMID |
31795411
|
| PMC |
PMC6969899
|
| MeSH |
Arabidopsis / classification*
Arabidopsis / cytology
Arabidopsis / genetics
Arabidopsis / growth & development*
Arabidopsis Proteins / genetics*
Cell Differentiation
Gene Expression Profiling
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
Osmotic Pressure
Plant Roots / cytology
Plant Roots / genetics
Plant Roots / growth & development*
Stem Cell Niche
Stress, Physiological
|
| IF |
3.759
|
| リソース情報 |
| シロイヌナズナ / 植物培養細胞・遺伝子 |
sja02900
sja04400
sja21500
sja21600
sja25100
sja26400
sja26800
sja33200 |
