Physicochemical characterizations of five Dioscorea alata L. starches from China

Jiang, Shuo; Cen, Jinxi; Zhou, Yufeng; Wang, Yin; Wu, Dianxing; Zhian, Wang; Sun, Jian; Shu, Xiaoli

doi:10.1016/j.ijbiomac.2023.124225

Cited by 10 publications

(2 citation statements)

References 58 publications

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“…This observation suggests that starch granules, especially the smaller ones, may undergo a fusion process during tuber dormancy. The typical feature of potato and yam starch is that the amylopectin double chains are arranged in a hexagonal shape, indicating a B-type polymorphic structure [54,55]. The stability of the starch structures, inferred from melting temperatures, is compromised during the dormancy period, as shown by a decrease in melting thermodynamic parameters [56,57].…”

Section: Carbohydrate Metabolismmentioning

confidence: 99%

Advances in the Modulation of Potato Tuber Dormancy and Sprouting

Di,

Wang,

Zhang

et al. 2024

IJMS

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The post-harvest phase of potato tuber dormancy and sprouting are essential in determining the economic value. The intricate transition from dormancy to active growth is influenced by multiple factors, including environmental factors, carbohydrate metabolism, and hormonal regulation. Well-established environmental factors such as temperature, humidity, and light play pivotal roles in these processes. However, recent research has expanded our understanding to encompass other novel influences such as magnetic fields, cold plasma treatment, and UV-C irradiation. Hormones like abscisic acid (ABA), gibberellic acid (GA), cytokinins (CK), auxin, and ethylene (ETH) act as crucial messengers, while brassinosteroids (BRs) have emerged as key modulators of potato tuber sprouting. In addition, jasmonates (JAs), strigolactones (SLs), and salicylic acid (SA) also regulate potato dormancy and sprouting. This review article delves into the intricate study of potato dormancy and sprouting, emphasizing the impact of environmental conditions, carbohydrate metabolism, and hormonal regulation. It explores how various environmental factors affect dormancy and sprouting processes. Additionally, it highlights the role of carbohydrates in potato tuber sprouting and the intricate hormonal interplay, particularly the role of BRs. This review underscores the complexity of these interactions and their importance in optimizing potato dormancy and sprouting for agricultural practices.

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Section: Carbohydrate Metabolismmentioning

confidence: 99%

Advances in the Modulation of Potato Tuber Dormancy and Sprouting

Di,

Wang,

Zhang

et al. 2024

IJMS

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“…In cereal plants, such as wheat and maize, amylopectins are characterized by monoclinic double chain packing, corresponding to A-type polymorphic structure. At the same time, starches from tuber crops, such as potato and yam (Dioscorea alata), are mainly characterized by hexagonal packaging of amylopectin double chains, corresponding to B-type polymorphic structure [26][27][28]. Starches of some species, for instance, from pea, adopt so-called C-type polymorphic structure, representing a mixture of A-and B-type structures [29,30].…”

Section: Starch Polymorphic Structurementioning

confidence: 99%

Changes in Structural and Thermodynamic Properties of Starch during Potato Tuber Dormancy

Wasserman

Kolachevskaya

Кривандин

et al. 2023

IJMS

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The main reserve polysaccharide of plants—starch—is undoubtedly important for humans. One of the main sources of starch is the potato tuber, which is able to preserve starch for a long time during the so-called dormancy period. However, accumulated data show that this dormancy is only relative, which raises the question of the possibility of some kind of starch restructuring during dormancy periods. Here, the effect of long-term periods of tuber rest (at 2–4 °C) on main parameters of starches of potato tubers grown in vivo or in vitro were studied. Along with non-transgenic potatoes, Arabidopsis phytochrome B (AtPHYB) transformants were investigated. Distinct changes in starch micro and macro structures—an increase in proportion of amorphous lamellae and of large-sized and irregular-shaped granules, as well as shifts in thickness of the crystalline lamellae—were detected. The degree of such alterations, more pronounced in AtPHYB-transgenic tubers, increased with the longevity of tuber dormancy. By contrast, the polymorphic crystalline structure (B-type) of starch remained unchanged regardless of dormancy duration. Collectively, our data support the hypothesis that potato starch remains metabolically and structurally labile during the entire tuber life including the dormancy period. The revealed starch remodeling may be considered a process of tuber preadaptation to the upcoming sprouting stage.

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Deciphering the landscape and evolutionary trajectory of NLR immune receptors in Dioscorea alata

Wang,

Feng,

et al. 2024

Plant Mol Biol

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Physicochemical characterizations of five Dioscorea alata L. starches from China

Cited by 10 publications

References 58 publications

Advances in the Modulation of Potato Tuber Dormancy and Sprouting

Advances in the Modulation of Potato Tuber Dormancy and Sprouting

Changes in Structural and Thermodynamic Properties of Starch during Potato Tuber Dormancy

Deciphering the landscape and evolutionary trajectory of NLR immune receptors in Dioscorea alata

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