scholarly journals Moderate water stress in rice induces rhizosheath formation associated with abscisic acid and auxin responses

2020 ◽  
Vol 71 (9) ◽  
pp. 2740-2751
Author(s):  
Yingjiao Zhang ◽  
Huan Du ◽  
Yao Gui ◽  
Feiyun Xu ◽  
Jianping Liu ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Root Hair ◽  
Hair Length ◽  
Wild Type ◽  
Short Root ◽  
Rice Varieties ◽  
Root Hair Length ◽  
Root Hair Growth ◽  
Aba Content

Abstract The rhizosheath is known to be beneficial for drought resistance in many plants, but the regulation of rhizosheath formation in rice plants is unclear. Here, we investigate rhizosheath formation in different rice varieties and root hair mutants. Our results showed that moderate water stress in rice induced rhizosheath formation. The soil porosity and water content were higher in the rice rhizosheath than in the rice bulk soil under moderate water stress. Additionally, rhizosheath formation in short root hair mutants was lower than in wild-type rice under moderate water stress. Moreover, transcriptomic results indicated that abscisic acid (ABA) and auxin were involved in root and root hair responses in rhizosheath formation. Further, blocking ABA and auxin pathways in wild type and in rhl1-1, the shortest root hair mutant, rhizosheath formation and root hair length were significantly decreased under moderate water stress. However, wild type plants maintained a higher root ABA content, root basipetal auxin transport, root hair length, and amount of rhizosheath than did rhl1-1. Our results suggest that moderate water stress in rice induces rhizosheath formation by modulating the ABA and auxin responses to regulate root and root hair growth, which may be used to breed rice varieties resistant to drought.

scholarly journals What are the implications of variation in root hair length on tolerance to phosphorus deficiency in combination with water stress in barley (Hordeum vulgare)?

2012 ◽  
Vol 110 (2) ◽  
pp. 319-328 ◽  
Author(s):  
L.K. Brown ◽  
T.S. George ◽  
J.A. Thompson ◽  
G. Wright ◽  
J. Lyon ◽  
...  
Keyword(s):  
Water Stress ◽  
Hordeum Vulgare ◽  
Root Hair ◽  
Phosphorus Deficiency ◽  
Hair Length ◽  
Root Hair Length

scholarly journals Genome-wide association study reveals the genetic architecture of root hair length in maize

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Lin Liu ◽  
Lu-Guang Jiang ◽  
Jin-Hong Luo ◽  
Ai-Ai Xia ◽  
Li-Qun Chen ◽  
...  
Keyword(s):  
Root Hair ◽  
Metabolic Pathways ◽  
Hair Growth ◽  
Genetic Basis ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Hair Length ◽  
Root Hair Length ◽  
Genome Wide ◽  
Root Hair Growth

Abstract Background Root hair, a special type of tubular-shaped cell, outgrows from root epidermal cell and plays important roles in the acquisition of nutrients and water, as well as interactions with biotic and abiotic stress. Although many genes involved in root hair development have been identified, genetic basis of natural variation in root hair growth has never been explored. Results Here, we utilized a maize association panel including 281 inbred lines with tropical, subtropical, and temperate origins to decipher the phenotypic diversity and genetic basis of root hair length. We demonstrated significant associations of root hair length with many metabolic pathways and other agronomic traits. Combining root hair phenotypes with 1.25 million single nucleotide polymorphisms (SNPs) via genome-wide association study (GWAS) revealed several candidate genes implicated in cellular signaling, polar growth, disease resistance and various metabolic pathways. Conclusions These results illustrate the genetic basis of root hair length in maize, offering a list of candidate genes predictably contributing to root hair growth, which are invaluable resource for the future functional investigation.

Spanish spelt is unique germplasm for improvement of root hair length in hexaploid wheat

2020 ◽  
Vol 452 (1-2) ◽  
pp. 171-184 ◽  
Author(s):  
Natsumi Okano ◽  
Ryo Goto ◽  
Taku Kato ◽  
Daisuke Saisho ◽  
Kenji Kato ◽  
...  
Keyword(s):  
Root Hair ◽  
Hexaploid Wheat ◽  
Hair Length ◽  
Root Hair Length

Inhibition of Flowering in Lolium temulentum L. By Water Stress: a Role for Abscisic Acid

1977 ◽  
Vol 4 (2) ◽  
pp. 225 ◽  
Author(s):  
RW King ◽  
LT Evans
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Long Day ◽  
Relative Water ◽  
The One ◽  
Floral Evocation ◽  
Leaf Photosynthetic Rate ◽  
Response To Water ◽  
Aba Content ◽  
High Intensity Light

A brief, 8-h water stress during the induction of flowering in L. temulentum reduces the flowering response, the more so the greater the stress. Water stress also affected leaf photosynthetic rate, relative water content of leaves and leaf elongation. Water stress was most inhibitory to flowering when applied during the period of high-intensity light at the beginning of the one long day. The abscisic acid (ABA) content of leaves increased up to 30-fold during the imposition of water stress and fell rapidly after stress was relieved, regardless of when the stress was imposed. The greater the stress, the higher was the level of ABA in leaves and the greater was the inhibition of flowering. The ABA content of apices also rose in response to water stress, in some cases during the stress treatment but usually 8-22 h later. Flowering was inhibited when apical ABA contents were high at the end of the long day. Although water stress may influence the flowering of plants in several ways, these experiments suggest that water stress during the long day induction of L. temulentum inhibits flowering by raising the content of ABA at the shoot apex during floral evocation.

Interactions between root hair length and arbuscular mycorrhizal colonisation in phosphorus deficient barley (Hordeum vulgare)

2013 ◽  
Vol 372 (1-2) ◽  
pp. 195-205 ◽  
Author(s):  
Lawrie K. Brown ◽  
Timothy S. George ◽  
Gracie E. Barrett ◽  
Stephen F. Hubbard ◽  
Philip J. White
Keyword(s):  
Hordeum Vulgare ◽  
Root Hair ◽  
Arbuscular Mycorrhizal ◽  
Hair Length ◽  
Root Hair Length ◽  
Mycorrhizal Colonisation

scholarly journals Genome-wide linkage mapping of QTL for root hair length in a Chinese common wheat population

2020 ◽  
Vol 8 (6) ◽  
pp. 1049-1056
Author(s):  
Feng Huang ◽  
Zhaoyan Chen ◽  
Dejie Du ◽  
Panfeng Guan ◽  
Lingling Chai ◽  
...  
Keyword(s):  
Common Wheat ◽  
Root Hair ◽  
Linkage Mapping ◽  
Hair Length ◽  
Root Hair Length ◽  
Wheat Population ◽  
Genome Wide

Root hair length and rhizosheath mass depend on soil porosity, strength and water content in barley genotypes

Planta ◽  
2013 ◽  
Vol 239 (3) ◽  
pp. 643-651 ◽  
Author(s):  
Rebecca E. Haling ◽  
Lawrie K. Brown ◽  
A. Glyn Bengough ◽  
Tracy A. Valentine ◽  
Philip J. White ◽  
...  
Keyword(s):  
Water Content ◽  
Root Hair ◽  
Soil Porosity ◽  
Hair Length ◽  
Root Hair Length ◽  
Barley Genotypes
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