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Comparative analysis of endogenous hormones level in two soybean (Glycine max L.) lines differing in waterlogging tolerance.

Kim YH, Hwang SJ, Waqas M, Khan AL, Lee JH, Lee JD, Nguyen HT, Lee IJ - Front Plant Sci (2015)

Bottom Line: Endogenous hormones also showed significant differences between WTL and WSL.The ratio of total GA and ABA was significantly higher in WTL than in WSL.Anatomical study of the root revealed that aerenchyma cells in the stele were better developed in WTL than in WSL.

View Article: PubMed Central - PubMed

Affiliation: Division of Plant Biosciences, Kyungpook National University Daegu, South Korea ; Division of Plant Sciences and National Center for Soybean Biotechnology, University of Missouri Columbia, MO, USA.

ABSTRACT
Waterlogged condition due to flooding is one of the major abiotic stresses that drastically affect the soybean growth and yield around the world. As a result, many breeders have focused on the development of waterlogging tolerance in soybean varieties, and thus, several tolerant varieties were developed. However, the physiological mechanism of waterlogging tolerance is not yet fully understood. We particularly studied the endogenous hormones regulation during waterlogging in two contrasting soybean genotypes. According to our results, adventitious roots were better developed in the waterlogging tolerant line (WTL) than in the waterlogging susceptible line (WSL). Endogenous hormones also showed significant differences between WTL and WSL. The ethylene production ratio was higher in WTL than in WSL, and methionine was higher in WTL than in WSL. Other endogenous abscisic acid (ABA) contents were lower in WTL than in WSL. Conversely, gibberellic acid (GA) showed a tendency to be high in WTL, especially the levels of the bioactive GA4. The ratio of total GA and ABA was significantly higher in WTL than in WSL. Anatomical study of the root revealed that aerenchyma cells in the stele were better developed in WTL than in WSL.

No MeSH data available.


Endogenous gibberellic acid (GA) contents in two soybean lines after waterlogging treatment. The regulation of different gibberellic acids is shown as (A) G12, (B) G24, (C) GA9, (D) GA4 and (E) GA34. In the figures, WTL indicates the waterlogging tolerant line (PI408105A) and WSL revealed waterlogging susceptible line (S99-2281). In the figure, star marks indicated significantly difference between control and treatment at P < 0.05 or P < 0.01. Data is the average ± standard error (n = 3).
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Figure 5: Endogenous gibberellic acid (GA) contents in two soybean lines after waterlogging treatment. The regulation of different gibberellic acids is shown as (A) G12, (B) G24, (C) GA9, (D) GA4 and (E) GA34. In the figures, WTL indicates the waterlogging tolerant line (PI408105A) and WSL revealed waterlogging susceptible line (S99-2281). In the figure, star marks indicated significantly difference between control and treatment at P < 0.05 or P < 0.01. Data is the average ± standard error (n = 3).

Mentions: Of the plant hormones, GA especially can regulate various physiological responses, such as regulation of plant growth and development, induction of seed germination, control of flowering, and tolerance to stress conditions. Analyzed GA content was significantly high in WTL at 5 DAT, whereas mostly it was not significantly high at 10 DAT after waterlogging (Figure 5). In contrast, GA in WSL decreased after the waterlogging treatment (Figures 5B–E).


Comparative analysis of endogenous hormones level in two soybean (Glycine max L.) lines differing in waterlogging tolerance.

Kim YH, Hwang SJ, Waqas M, Khan AL, Lee JH, Lee JD, Nguyen HT, Lee IJ - Front Plant Sci (2015)

Endogenous gibberellic acid (GA) contents in two soybean lines after waterlogging treatment. The regulation of different gibberellic acids is shown as (A) G12, (B) G24, (C) GA9, (D) GA4 and (E) GA34. In the figures, WTL indicates the waterlogging tolerant line (PI408105A) and WSL revealed waterlogging susceptible line (S99-2281). In the figure, star marks indicated significantly difference between control and treatment at P < 0.05 or P < 0.01. Data is the average ± standard error (n = 3).
© Copyright Policy
Related In: Results  -  Collection

License
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getmorefigures.php?uid=PMC4585003&req=5

Figure 5: Endogenous gibberellic acid (GA) contents in two soybean lines after waterlogging treatment. The regulation of different gibberellic acids is shown as (A) G12, (B) G24, (C) GA9, (D) GA4 and (E) GA34. In the figures, WTL indicates the waterlogging tolerant line (PI408105A) and WSL revealed waterlogging susceptible line (S99-2281). In the figure, star marks indicated significantly difference between control and treatment at P < 0.05 or P < 0.01. Data is the average ± standard error (n = 3).
Mentions: Of the plant hormones, GA especially can regulate various physiological responses, such as regulation of plant growth and development, induction of seed germination, control of flowering, and tolerance to stress conditions. Analyzed GA content was significantly high in WTL at 5 DAT, whereas mostly it was not significantly high at 10 DAT after waterlogging (Figure 5). In contrast, GA in WSL decreased after the waterlogging treatment (Figures 5B–E).

Bottom Line: Endogenous hormones also showed significant differences between WTL and WSL.The ratio of total GA and ABA was significantly higher in WTL than in WSL.Anatomical study of the root revealed that aerenchyma cells in the stele were better developed in WTL than in WSL.

View Article: PubMed Central - PubMed

Affiliation: Division of Plant Biosciences, Kyungpook National University Daegu, South Korea ; Division of Plant Sciences and National Center for Soybean Biotechnology, University of Missouri Columbia, MO, USA.

ABSTRACT
Waterlogged condition due to flooding is one of the major abiotic stresses that drastically affect the soybean growth and yield around the world. As a result, many breeders have focused on the development of waterlogging tolerance in soybean varieties, and thus, several tolerant varieties were developed. However, the physiological mechanism of waterlogging tolerance is not yet fully understood. We particularly studied the endogenous hormones regulation during waterlogging in two contrasting soybean genotypes. According to our results, adventitious roots were better developed in the waterlogging tolerant line (WTL) than in the waterlogging susceptible line (WSL). Endogenous hormones also showed significant differences between WTL and WSL. The ethylene production ratio was higher in WTL than in WSL, and methionine was higher in WTL than in WSL. Other endogenous abscisic acid (ABA) contents were lower in WTL than in WSL. Conversely, gibberellic acid (GA) showed a tendency to be high in WTL, especially the levels of the bioactive GA4. The ratio of total GA and ABA was significantly higher in WTL than in WSL. Anatomical study of the root revealed that aerenchyma cells in the stele were better developed in WTL than in WSL.

No MeSH data available.