Endogenous Gibberellins in Bulbils of Chinese Yam during Growth and Storage

Kim, Sang Kuk; Shon, Tae Kwonu; Park, Shin Young; Lee, Sang Chul; Kim, Hak Yoon; Sohn, E.Y.; Jang, Soo‐Won; Choo, Yeon‐Sik; Kim, Kil Ung; Lee, In‐Jung

doi:10.1626/pps.8.181

Cited by 4 publications

(8 citation statements)

References 8 publications

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“…'Labreko' followed with 3.13 ± 0.02 -3.40 ± 0.03 mg/g dw, while 'Pona' recorded 2.95 ± 0.03 -3.05 ± 0.00 mg/g dw, representing an increase of 64.74 -77.08% and 61.20 -64.86%, respectively. This observation is consistent with the increase in endogenous gibberellin levels reported by Kim et al (2005) for Chinese yam bulbils during storage, confirming that high level of GA is essential for the dormancy of 3 y a m t u b e r s . O n t h e c o n t r a r y, t h e corresponding inner portion of the tubers had GA decreased to the lowest levels recorded 3 for all the yam cultivars.…”

Section: Gibberellic Acid Levels In Outer and Inner Portions Of Yam T...supporting

confidence: 91%

“…Exogenous GA application has been found to induce breaking of dormancy to enhance seed germination and sprouting in many plants. On the contrary, GA rather induces dormancy in some plants species (Kim et al, 2005). The effect of exogenously applied GA on yam 3 tuber dormancy and sprouting has been extensively investigated, and reported that generally high concentrations of this plant hormone can considerably extend dormancy period in yam tubers Ile et al, 2006 (Hamadina andCraufurd, 2015;Shiwachi et al, 2013;;Girardin et al, 1998).…”

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confidence: 99%

“…The effect of exogenously applied GA on yam 3 tuber dormancy and sprouting has been extensively investigated, and reported that generally high concentrations of this plant hormone can considerably extend dormancy period in yam tubers Ile et al, 2006 (Hamadina andCraufurd, 2015;Shiwachi et al, 2013;;Girardin et al, 1998). However, similar attention has not been extended to endogenous GA with respect to how it 3 influences dormancy and sprouting in yam tubers although endogenous GAs have been implicated in the tuber dormancy mechanism in water yam (Park et al, 2003) and Chinese yam (Kim et al, 2005) Sampling of yam tubers to determine GA 3 levels was done at harvest and then regularly th every 30 days until the 90 day of storage. Five yam tubers were randomly picked for the respective cultivars at these specific storage points.…”

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confidence: 99%

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Yam Tuber Dormancy and Sprouting: The Role of Concentration Dynamics of Endogenous Gibberellic Acid

Boateng¹,

Amoako-Andoh²,

Wireko‐Manu³

et al. 2022

Ag. Food. Sc. J Gh

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The role of endogenous gibberellic acid (GA ) in the regulation of yam (Dioscorea spp.) tuber 3 dormancy was investigated by determining the changes in the endogenous GA levels during 3 natural dormancy progression. Two Dioscorea rotundata cultivars ('Pona' and 'Labreko') and one Dioscorea alata cultivar ('CRI-Ahoɔdenfoɔ') used in these studies have varying dormancy duration. Endogenous GA levels determined for the yam tubers ranged from 1.53 – 3.05 mg/g dw 3 and 1.23 – 1.58 mg/g dw for 'Pona'; 1.53 – 3.40 mg/g dw and 1.25–1.57 mg/g dw for 'Labreko'; 1.48 – 3.62 mg/g dw and 1.28 – 1.60 mg/g dw for 'CRI-Ahoɔdenfoɔ', respectively, for the outer and inner portions. 'Pona' and 'Labreko' had dormancy break at 60 days after harvest (DAH), but at 90 DAH for 'CRI-Ahoɔdenfoɔ'. Generally, GA levels increased from harvest to the maximum 3 at 30 DAH, then declined to the minimum at 60 DAH before finally increasing again at 90 DAH for the outer portions of the yam tuber. For the inner portions of the tuber, GA levels rather 3 declined significantly to the minimum at 30 DAH, increased at 60 DAH and then decreased again at 90 DAH. GA levels in the outer portions of the tubers increased by 84-122%, 65-77% and 61- 3 65%, respectively, in 'CRI-Ahoɔdenfoɔ', 'Labreko' and 'Pona', but decreased in the inner portions by 19-23%, 24-26% and 26-28%. Essentially, higher amounts of endogenous gibberellins in yam tubers induced longer dormancy duration whereas lower amounts were indicative of dormancy termination and subsequent initiation of sprouting.

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Section: Gibberellic Acid Levels In Outer and Inner Portions Of Yam T...supporting

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Yam Tuber Dormancy and Sprouting: The Role of Concentration Dynamics of Endogenous Gibberellic Acid

Boateng¹,

Amoako-Andoh²,

Wireko‐Manu³

et al. 2022

Ag. Food. Sc. J Gh

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“…The bulbil of Chinese yam has been used as an important food in people’s everyday life and as an important ingredient in livestock feed. It has also been used as one of the important ingredients for invigorating the spleen and stomach, promoting the production of body fluids, benefiting the lung, and invigorating the kidney [ 2 , 13 , 20 ]. The yield of bulbils of Chinese yam is from 3000 to 4500 kg dry weight per hectare.…”

Section: Introductionmentioning

confidence: 99%

“…The yield of bulbils of Chinese yam is from 3000 to 4500 kg dry weight per hectare. Starch is the main component in bulbil and can account for about 60% in dry bulbil [ 2 , 13 , 20 ]. However, the structural and functional properties of starch from bulbil have not been studied but there has been one previous study investigating its physicochemical properties [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Structural and Functional Properties of Starches from the Rhizome and Bulbil of Chinese Yam (Dioscorea opposita Thunb.)

et al. 2018

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Chinese yam is an important edible starch plant and widely cultivated in China. Its rhizome and bulbil are starch storage tissues below and above ground, respectively. In this paper, starches were isolated from the rhizome and bulbil of Chinese yam, and their structural and functional properties were compared. Both starches had an oval shape with an eccentric hilum and a CA-type crystalline structure. Their short-range ordered structure and lamellar structure had no significant difference. However, the rhizome starch had a significantly bigger granule size and lower amylose content than the bulbil starch. The swelling power and water solubility were significantly lower in the rhizome starch than in the bulbil starch. The onset and peak gelatinization temperatures were significantly higher in the rhizome starch than in the bulbil starch. The rhizome starch had a significantly higher breakdown viscosity and a lower setback viscosity than the bulbil starch. The thermal stability was lower in the rhizome starch than in the bulbil starch. The rhizome starch had a significantly lower resistance to hydrolysis and in vitro digestion than the bulbil starch. The above results provide important information for the utilization of rhizome and bulbil starches of Chinese yam.

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Phytohormone Profiling During Tuber Development of Chinese Yam by Ultra-high performance Liquid Chromatography–Triple Quadrupole Tandem Mass Spectrometry

Gong

Luo

Wang

et al. 2016

J Plant Growth Regul

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Endogenous Gibberellins in Bulbils of Chinese Yam during Growth and Storage

Cited by 4 publications

References 8 publications

Yam Tuber Dormancy and Sprouting: The Role of Concentration Dynamics of Endogenous Gibberellic Acid

Yam Tuber Dormancy and Sprouting: The Role of Concentration Dynamics of Endogenous Gibberellic Acid

Comparison of Structural and Functional Properties of Starches from the Rhizome and Bulbil of Chinese Yam (Dioscorea opposita Thunb.)

Phytohormone Profiling During Tuber Development of Chinese Yam by Ultra-high performance Liquid Chromatography–Triple Quadrupole Tandem Mass Spectrometry

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