Root Development at Different Growth Stages of Wheat and Barley Cultivars Grown in Tubes under Field Environmental Conditions

Akman, Hayati; Topal, Ali

doi:10.9734/ijpss/2016/27800

Cited by 2 publications

(1 citation statement)

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“…The growth of roots is related to plant growth stage, genotype, arbuscular mycorrhizal colonization rate in soil and can be affected by environmental factors such as drought (Akman & Topal, 2016;Sendek et al, 2019). Generally, the roots of plants firstly sensed the stress signal when subjected to DS.…”

Section: Discussionmentioning

confidence: 99%

Peer Review #2 of "Novel insights into the effect of drought stress on the development of root and caryopsis in barley (v0.1)"

Mei¹

2020

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Drought is a common natural disaster in barley production, which restricts the growth and development of barley roots and caryopses seriously, thereby decreasing yield and debasing grain quality. However, mechanisms for how drought stress affects barley caryopses caryopsis and roots development under drought stress are unclear. In this paper, barley cultivar ? Suluomai No. 1 was treated with drought from flowering to caryopses caryopsis mature stage. The morphological and structural changes in roots growth and caryopses caryopsis development of barley were investigated. Drought stress increased root/shoot ratio and eventually led to the 20.16% reduction of ear weight and 7.75% reduction of 1000-grain weight by affecting the biomass accumulation of roots and caryopses. The barley roots under drought had more lateral roots while the vessel number and volume of roots decreased. Meanwhile, drought stress accelerated the maturation of caryopses, resulting in a decrease in the accumulation of starch but a significant increase of protein accumulation in barley endosperm. There was a significantly positive correlation (0.76) between the area of root vessel and the relative area of protein in endosperm cells under normal condition, and drought increased the correlation coefficient (0.81). Transcriptome analysis indicated that drought induced the differential gene expressions induced by drought of genes in caryopses were mainly involved in encoding storage proteins and protein synthesis pathways. In general, drought caused changes in the morphology and structure of barley roots, and the roots conveyed stress signals to caryopses, inducing differential expression of genes related to protein biosynthesis, ultimately leading to the increase in the accumulation of endosperm protein. The results not only deepen the study on drought mechanism of barley, but also provide theoretical basis for molecular breeding, high-yield cultivation and quality improvement in barley.

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Section: Discussionmentioning

confidence: 99%

Peer Review #2 of "Novel insights into the effect of drought stress on the development of root and caryopsis in barley (v0.1)"

Mei¹

2020

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Novel insights into the effect of drought stress on the development of root and caryopsis in barley

Chen

et al. 2020

PeerJ

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Drought is a common natural disaster in barley production, which restricts the growth and development of barley roots and caryopses seriously, thereby decreasing yield and debasing grain quality. However, mechanisms for how drought stress affects barley caryopses and roots development under drought stress are unclear. In this paper, Suluomai1 was treated with drought from flowering to caryopses mature stage. The morphological and structural changes in roots growth and caryopses development of barley were investigated. Drought stress increased root/shoot ratio and eventually led to the 20.16% reduction of ear weight and 7.75% reduction of 1,000-grain weight by affecting the biomass accumulation of roots and caryopses. The barley roots under drought had more lateral roots while the vessel number and volume of roots decreased. Meanwhile, drought stress accelerated the maturation of caryopses, resulting in a decrease in the accumulation of starch but a significant increase of protein accumulation in barley endosperm. There was a significantly positive correlation (0.76) between the area of root vessel and the relative area of protein in endosperm cells under normal condition and drought increased the correlation coefficient (0.81). Transcriptome analysis indicated that drought induced differential expressions of genes in caryopses were mainly involved in encoding storage proteins and protein synthesis pathways. In general, drought caused changes in the morphology and structure of barley roots, and the roots conveyed stress signals to caryopses, inducing differential expression of genes related to protein biosynthesis, ultimately leading to the increase in the accumulation of endosperm protein. The results not only deepen the study on drought mechanism of barley, but also provide theoretical basis for molecular breeding, high-yield cultivation and quality improvement in barley.

show abstract

Root Development at Different Growth Stages of Wheat and Barley Cultivars Grown in Tubes under Field Environmental Conditions

Cited by 2 publications

References 10 publications

Peer Review #2 of "Novel insights into the effect of drought stress on the development of root and caryopsis in barley (v0.1)"

Peer Review #2 of "Novel insights into the effect of drought stress on the development of root and caryopsis in barley (v0.1)"

Novel insights into the effect of drought stress on the development of root and caryopsis in barley

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