Influence of Planting Density on Sweet Potato Storage Root Formation by Regulating Carbohydrate and Lignin Metabolism

Liang, Qinggan; Chen, Hongrong; Chang, Hong Young; Liu, Yi; Wang, Qinnan; Jiantao, Wu; Liu, Yonghua; Kumar, Sunjeet; Yue, Chen; Chen, Yanli; Zhu, Guopeng

doi:10.3390/plants12102039

Cited by 4 publications

(3 citation statements)

References 42 publications

(75 reference statements)

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“…Sweet potato is an important tuberous root crop, and its yield depends on a change in the developmental fate of ARs into SRs [ 2 , 44 ]. The lignin biosynthesis limits sweet potato yield formation in storage roots [ 45 ]. The AP2/ERF transcription factor, IbRAP2.4, inhibited SR formation in transgenic sweet potato by comprehensively upregulating lignin biosynthesis pathway genes [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

A Small Auxin-Up RNA Gene, IbSAUR36, Regulates Adventitious Root Development in Transgenic Sweet Potato

Zhou,

Li,

et al. 2024

Genes

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Small auxin-upregulated RNAs (SAURs), as the largest family of early auxin-responsive genes, play important roles in plant growth and development processes, such as auxin signaling and transport, hypocotyl development, and tolerance to environmental stresses. However, the functions of few SAUR genes are known in the root development of sweet potatoes. In this study, an IbSAUR36 gene was cloned and functionally analyzed. The IbSAUR36 protein was localized to the nucleus and plasma membrane. The transcriptional level of this gene was significantly higher in the pencil root and leaf.This gene was strongly induced by indole-3-acetic acid (IAA), but it was downregulated under methyl-jasmonate(MeJA) treatment. The promoter of IbSAUR36 contained the core cis-elements for phytohormone responsiveness. Promoter β-glucuronidase (GUS) analysis in Arabidopsis showed that IbSAUR36 is highly expressed in the young tissues of plants, such as young leaves, roots, and buds. IbSAUR36-overexpressing sweet potato roots were obtained by an efficient Agrobacterium rhizogenes-mediated root transgenic system. We demonstrated that overexpression of IbSAUR36 promoted the accumulation of IAA, upregulated the genes encoding IAA synthesis and its signaling pathways, and downregulated the genes encoding lignin synthesis and JA signaling pathways. Taken together, these results show that IbSAUR36 plays an important role in adventitious root (AR) development by regulating IAA signaling, lignin synthesis, and JA signaling pathways in transgenic sweet potatoes.

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Section: Discussionmentioning

confidence: 99%

A Small Auxin-Up RNA Gene, IbSAUR36, Regulates Adventitious Root Development in Transgenic Sweet Potato

Zhou,

Li,

et al. 2024

Genes

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“…The lowest total root yield was from 2 plants spaced at 100cmx50cm (D ). In the study of Liang et al (2023), appropriate 3 plant spacing is critical in regulating carbohydrate and lignin metabolism affecting storage root formation. They found that a plant population of 62,520 plants ha -1 produced more storage roots.…”

Section: Yield and Yield Componentsmentioning

confidence: 99%

“…The yellow to orange-fleshed varieties contain higher levels of carotenoids an unsurpassed source of beta-, carotene a good source of vitamin A (Woolfe 1992 The establishment of an optimum population per unit area of any crop is important to achieve the crop's maximum yield (Singh Singh 2002). Liang et al & (2023) reported that a plant spacing of 80cmx20cm (62,520 plants ha ) produced -1 more storage roots than 80cmx25cm (50,025 plants ha ). This treatment also -1 stimulated the cambium cell differentiation increasing carbohydrate accumulation.…”

Section: Introductionmentioning

confidence: 99%

Effects of plant spacing and rates of NPK application on the growth and yield of sweetpotato var NSIC SP30

Colipano,

Asio,

Gorne

2023

ATR

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Sweetpotato yield may be increased through effective crop management practices including plant spacing and fertilization. This study was conducted in an alluvial soil (Inceptisol) to evaluate the effects of plant spacing and rates of NPK application on the growth and yield of NSIC Sp30 sweetpotato. The experiment was laid out in a split plot arranged in RCBD with three replications. Three plant spacing treatments were designated as the main plot D1(75cmx25cm), D2(100cmx25cm), and D3(100cmx50cm). The rates of NPK application were designated as the subplot: F0(no NPK), F1(40-40-60kg ha-1 NPK), F2(60-60-90kg ha-1 NPK), and F3(80-80-120kg ha-1 NPK). Plant spacing significantly affected the number of lateral vines, weight of marketable roots, number of marketable roots, root length, and the total root yield of NSIC Sp30 sweetpotato. An interaction effect was observed between the plants spaced at 100cmx50cm with NPK application resulting in more medium-sized roots. Plants spaced at 75cmx25cm produced the highest total root yield of 7.67t ha-1. Application of NPK significantly influenced the length of main vines, fresh herbage yield, the weight of marketable roots, number of marketable roots, root length, root diameter, total root yield, LAI and HI. A higher yield of marketable roots 7,208.85kg ha-1 and a total root yield of 8.51t ha-1 were observed for plants applied with 40-40-60 kg ha-1 NPK. The growth and yield performance of NSIC Sp30 is better when plants are spaced at 75cmx25cm with 53,333 plants ha-1 and fertilized with 40-40-60kg ha-1 of NPK.

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Mulching to improve sweet potato production

Sapakhova,

Islam,

Toishimanov

et al. 2024

Journal of Agriculture and Food Research

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Influence of Planting Density on Sweet Potato Storage Root Formation by Regulating Carbohydrate and Lignin Metabolism

Cited by 4 publications

References 42 publications

A Small Auxin-Up RNA Gene, IbSAUR36, Regulates Adventitious Root Development in Transgenic Sweet Potato

A Small Auxin-Up RNA Gene, IbSAUR36, Regulates Adventitious Root Development in Transgenic Sweet Potato

Effects of plant spacing and rates of NPK application on the growth and yield of sweetpotato var NSIC SP30

Mulching to improve sweet potato production

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