Nitrate Starvation Induced Changes in Root System Architecture, Carbon:Nitrogen Metabolism, and miRNA Expression in Nitrogen-Responsive Wheat Genotypes

Sinha, S. K.; Rani, Manju; Bansal, Niketa; Gayatri,; Venkatesh, Karnam; Mandal, Pranab Kumar

doi:10.1007/s12010-015-1815-8

Cited by 86 publications

(70 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Further, this report also suggested that N-concentration and limited-N duration are inversely related with the expression of specific TaMIRs under investigation. A recent study performed under normal and limited nitrate conditions in two wheat genotypes (Sinha et al, 2015), detected a set of ten differentially expressed miRNAs in plant roots. Some notable differences among their expressions were depending on both the genotype and the level of N availability.…”

Section: Mirnas and Their Targets Under Low Nitrogenmentioning

confidence: 99%

Dynamic roles of microRNAs in nutrient acquisition and plant adaptation under nutrient stress: A review

Shahzad¹,

Harlina²,

Ayaad³

et al. 2018

Plant Omics

View full text Add to dashboard Cite

A constant supply of soil nutrients is critical for the normal growth and development of plants. However, most environments are unstable and this variability depends on numerous factors that include availability of water content, pH, redox potential, an abundance of organic matter as well as microorganisms in soils. To overcome these hurdles and to maintain nutritional homeostasis, plants have evolved sophisticated systems for the continuous provision of soil nutrients necessary for their uninterrupted growth. In this pressing scenario, plant microRNAs (miRNAs) have emerged as a central regulator of nutrients uptake and transport during limited nutrient conditions. Numerous studies establish the intrinsic involvement of miRNAs and their immediate targets facilitating the core mechanisms related to nutrient homeostasis. In this review, we focus on global overview of miRNAs and their dynamic roles involved in keeping nutritional balance within the plants mediated via post-transcriptional regulation by transcript cleavage or translational inhibition of their target mRNAs. In addition, we have also focused on some of the forefront plant adaptations mediated by miRNAs during nutrient deficiency, such as root architecture modifications, transport channel modulation, long distance signaling and subsequent nutrient mobilization through phloem. Moreover, plant strategy to bring out such alterations is a highly perplexing mechanism that requires changes at large scale which involves coordinated regulation of miRNAs and plant hormones at multiple levels. Deciphering the underlying miRNAs-based mechanisms for streamlining nutrient uptake and transport would be a giant step towards solving this conundrum.

show abstract

Section: Mirnas and Their Targets Under Low Nitrogenmentioning

confidence: 99%

Dynamic roles of microRNAs in nutrient acquisition and plant adaptation under nutrient stress: A review

Shahzad¹,

Harlina²,

Ayaad³

et al. 2018

Plant Omics

View full text Add to dashboard Cite

show abstract

“…Nitrogen is an important plant nutrient used in the synthesis of several bio-products such as nucleic acids and proteins (Kraiser et al 2011; Sinha et al 2015). The nitrogen requirement of a plant is generally supplied through N-rich fertilizers where the nitrogen uptake efficiency is important (Abrol et al 2011).…”

Section: Mirnas Associated With Abiotic Stress Responses In the Tritimentioning

confidence: 99%

“…The nitrogen requirement of a plant is generally supplied through N-rich fertilizers where the nitrogen uptake efficiency is important (Abrol et al 2011). However, up to 60 % of applied fertilizer is lost to the environment resulting in economical loss and environmental pollution (Sinha et al 2015). The efficiency of nitrogen uptake and transport may vary depending on the plant species and genotype.…”

Section: Mirnas Associated With Abiotic Stress Responses In the Tritimentioning

confidence: 99%

“…Sinha and colleagues selected 10 different miRNAs from the literature, and their expression was characterized under N-deficient conditions with Q-PCR. They observed that miR159, miR160, miR164, miR399, miR1117, and miR1120 exhibited differential expression suggesting a role in N homeostasis (Sinha et al 2015) (Table 3). In another study, the upregulation of miR444a in roots and leaves of wheat in response to nitrogen deficiency was demonstrated (Gao et al 2016).…”

Section: Mirnas Associated With Abiotic Stress Responses In the Tritimentioning

confidence: 99%

“…Small-RNA sequencing technology as well as quantitative real-time PCR applications have been the most frequently used experimental strategies owing to their potential to both identify and quantify miRNAs. Interestingly, some miRNA families, for example miR159, miR167, and miR169, were detected as responsive to multiple stresses (Budak et al 2014; Sinha et al 2015; Budak et al 2015c). Alternatively, some miRNAs such as miR1432 and miR1137 displayed stress-specific expression patterns in several members of the Triticeae (Kantar et al 2010; Kantar et al 2011a; Gupta et al 2014; Ma et al 2015).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Abiotic stress miRNomes in the Triticeae

Alptekin

Langridge

Budak

2016

Funct Integr Genomics

View full text Add to dashboard Cite

The continued growth in world population necessitates increases in both the quantity and quality of agricultural production. Triticeae members, particularly wheat and barley, make an important contribution to world food reserves by providing rich sources of carbohydrate and protein. These crops are grown over diverse production environments that are characterized by a range of environmental or abiotic stresses. Abiotic stresses such as drought, heat, salinity, or nutrient deficiencies and toxicities cause large yield losses resulting in economic and environmental damage. The negative effects of abiotic stresses have increased at an alarming rate in recent years and are predicted to further deteriorate due to climate change, land degradation, and declining water supply. New technologies have provided an important tool with great potential for improving crop tolerance to the abiotic stresses: microRNAs (miRNAs). miRNAs are small regulators of gene expression that act on many different molecular and biochemical processes such as development, environmental adaptation, and stress tolerance. miRNAs can act at both the transcriptional and post-transcriptional levels, although post-transcriptional regulation is the most common in plants where miRNAs can inhibit the translation of their mRNA targets via complementary binding and cleavage. To date, expression of several miRNA families such as miR156, miR159, and miR398 has been detected as responsive to environmental conditions to regulate stress-associated molecular mechanisms individually and/or together with their various miRNA partners. Manipulation of these miRNAs and their targets may pave the way to improve crop performance under several abiotic stresses. Here, we summarize the current status of our knowledge on abiotic stress-associated miRNAs in members of the Triticeae tribe, specifically in wheat and barley, and the miRNA-based regulatory mechanisms triggered by stress conditions. Exploration of further miRNA families together with their functions under stress will improve our knowledge and provide opportunities to enhance plant performance to help us meet global food demand.

show abstract

Key phenotypes related to wheat grain yield in a two‐site multicultivar test

Yang

et al. 2022

Agronomy Journal

View full text Add to dashboard Cite

Yield performances of wheat (Triticum aestivum L.) cultivars are decided by the combined effects of key phenotypes. However, it is unclear which phenotypes are the key phenotypes that determine yield. We conducted a two-site multicultivar test in Henan and Anhui in China during the 2016-2017 wheat growing season. The objectives were to assess the relationships between grain yield and other related phenotypes and reveal the key phenotypes related to grain yield. Grain yield and nineteen phenotypes were assessed in a field trial consisting of 28 wheat cultivars. Multivariate statistical analysis methods (e.g., principal component analysis, partial least squares model, structural equation model) were used to reveal the relationships between grain yield and other related phenotypes. Wheat phenotypes changed as a result of the differences in environment (site) and genotype (cultivar). Eleven phenotypes were identified as the key phenotypes closely related to grain yield: biomass, harvest index, spike density, leaf nitrate reductase, net photosynthetic rate, canopy temperature, leaf chlorophyll, leaf area index, stomatal conductance, carboxylation efficiency, and transpiration rate. For analyzing the mechanisms of yield differences, multiple related phenotypes (rather than a single phenotype) should be considered. INTRODUCTIONWheat (Triticum aestivum L.) is an important cereal crop, and wheat production has great contributions to food security (Sloat et al., 2020

show abstract

Nitrate Starvation Induced Changes in Root System Architecture, Carbon:Nitrogen Metabolism, and miRNA Expression in Nitrogen-Responsive Wheat Genotypes

Cited by 86 publications

References 48 publications

Dynamic roles of microRNAs in nutrient acquisition and plant adaptation under nutrient stress: A review

Dynamic roles of microRNAs in nutrient acquisition and plant adaptation under nutrient stress: A review

Abiotic stress miRNomes in the Triticeae

Key phenotypes related to wheat grain yield in a two‐site multicultivar test

Contact Info

Product

Resources

About