Effect of photoperiod on the development of inflorescences in white Guinea yam (<i>Dioscorea rotundata</i>)

Shiwachi, Hironobu; Ayankanmi, Toye; Asiedu, Robert

doi:10.1002/ts.6

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…Several key phenotypes differentiate cultivated varieties from their wild relatives. Cultivated yams are characterized by larger and less ramified roots than their wild relatives, and some cultivated varieties do not develop inflorescences [ 19 ]. Finally, the wild relatives of yam are vines which grow partly in the shade of their tutor tree, while cultivated yams grow in full sunlight.…”

Section: Introductionmentioning

confidence: 99%

Molecular basis of African yam domestication: analyses of selection point to root development, starch biosynthesis, and photosynthesis related genes

Akakpo

Scarcelli

Chaïr³

et al. 2017

BMC Genomics

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BackgroundAfter cereals, root and tuber crops are the main source of starch in the human diet. Starch biosynthesis was certainly a significant target for selection during the domestication of these crops. But domestication of these root and tubers crops is also associated with gigantism of storage organs and changes of habitat.ResultsWe studied here, the molecular basis of domestication in African yam, Dioscorea rotundata. The genomic diversity in the cultivated species is roughly 30% less important than its wild relatives. Two percent of all the genes studied showed evidences of selection. Two genes associated with the earliest stages of starch biosynthesis and storage, the sucrose synthase 4 and the sucrose-phosphate synthase 1 showed evidence of selection. An adventitious root development gene, a SCARECROW-LIKE gene was also selected during yam domestication. Significant selection for genes associated with photosynthesis and phototropism were associated with wild to cultivated change of habitat. If the wild species grow as vines in the shade of their tree tutors, cultivated yam grows in full light in open fields.ConclusionsMajor rewiring of aerial development and adaptation for efficient photosynthesis in full light characterized yam domestication.Electronic supplementary materialThe online version of this article (10.1186/s12864-017-4143-2) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Molecular basis of African yam domestication: analyses of selection point to root development, starch biosynthesis, and photosynthesis related genes

Akakpo

Scarcelli

Chaïr³

et al. 2017

BMC Genomics

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“…LD conditions also promote the flowering of yam and cassava, while sweet potato flowering is accelerated under SD conditions [ 82 , 83 , 84 , 85 ]. The upregulation of MeFT1 and MeFT2 likely regulates the photoperiodic flowering of cassava under LD conditions [ 86 ] ( Figure 3 B).…”

Section: Pebp Signaling Network In Flowering Time Regulationmentioning

confidence: 99%

PEBP Signaling Network in Tubers and Tuberous Root Crops

Susila

Purwestri²

2023

Plants

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Tubers and tuberous root crops are essential carbohydrate sources and staple foods for humans, second only to cereals. The developmental phase transition, including floral initiation and underground storage organ formation, is controlled by complex signaling processes involving the integration of environmental and endogenous cues. FLOWERING LOCUS T (FT) and TERMINAL FLOWER 1/CENTRORADIALIS (TFL1/CEN), members of the phosphatidylethanolamine-binding protein (PEBP) gene family, play a central role in this developmental phase transition process. FT and FT-like proteins have a function to promote developmental phase transition, while TFL1/CEN act oppositely. The balance between FT and TFL1/CEN is critical to ensure a successful plant life cycle. Here, we present a summarized review of the role and signaling network of PEBP in floral initiation and underground storage organ formation, specifically in tubers and tuberous root crops. Lastly, we point out several questions that need to be answered in order to have a more complete understanding of the PEBP signaling network, which is crucial for the agronomical improvement of tubers and tuberous crops.

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“…Great efforts have been made to explore the physiological factors affecting the morphogenesis of yam tubers. The short-day treatment tended to promote tuber growth at the primary tuber growth stage of the plant, and bulbil development at the rapid tuber growth, but the responses varied among species and cultivar [5,6]. Endogenous hormones including gibberellins (GA), acetic acid (IAA) and abscisic acid (ABA) performed a key role at the beginning of tuber expansion stage, and trans-zeatin (tZ), jasmonic acid (JA) were also involved in tuber expansion [2,7,8].…”

Section: Introductionmentioning

confidence: 99%

Integrated mRNA and miRNA transcriptome analysis on the regulational of mechanism tuber expansion in Yam

Zhou¹,

Zhan²,

Xiao³

et al. 2019

Preprint

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Background Tuber is the storage organ of yam derived from modified stems. The development of tube expansion is a complex process and depends on the expression of genes that are involved by environmental and endogenous factors. However, little is known about the mechanism that regulates tuber expansion. In this study, in order to identify genes and miRNAs involvd in tuber enlargement, we examined the transcriptomes and small RNA in tuber initiation and expansion stages. Results A total of 14238 transcripts expressed differentially in the expansion stage were firstly identified using transcriptome technology. Of these, 5723 and 8515 genes were up and down regulated, respectively. The functional analysis revealed the coordination of tuber plant involved in processes of cell events, metabolism, biosynthesis and signalling transduction pathways at the transcriptional level, suggesting these DEGs are somehow involved in the responses of tuber expansion. In additional, 536 transcription factor genes were found differently expression in expansion stage at the transcript level. REVEILLE 6-like is identified to be up regulated in circadian rhythm pathway. REVEILLE 6-like LHY protein, zinc finger CCCH domain-containing protein 14, and DELLA genes were involved up regulated in expansion stage. Moreover, these genes were respectively involved in circadian rhythm pathway, starch and sucrose metabolism pathway, and GA pathway by KEGG analysis. Noteworthy, the analysis of the data showed that there were 23 known tuber miRNAs belonged to 11 miRNA families, and 50 novel miRNAs, miRNA160 miRNA396, and miR535 may be involved in complexity network to regulate cell division and differentiation in the expansion stage in yam. The integrated analysis of miRNA-mRNA were identified to be preferentially expressed in hormone signalling in expansion stage, like the ARFs by miRNA160 highlighting the involvement of miRNA-mRNA in the regulation hormone of tuber expansion in yam. Conclusion The transcriptome and miRNA datasets presented here identified a subset of candidate genes and miRNAs putatively associated with tuber expansion in yam, thus a hypothetical model of genetic regulatory network associated with tuber expansion in yam was put forward, which may provide a foundation for molecular regulatory mechanism researching on tuber expansion in Dioscorea species.

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Effect of photoperiod on the development of inflorescences in white Guinea yam (Dioscorea rotundata)

Cited by 3 publications

References 3 publications

Molecular basis of African yam domestication: analyses of selection point to root development, starch biosynthesis, and photosynthesis related genes

Molecular basis of African yam domestication: analyses of selection point to root development, starch biosynthesis, and photosynthesis related genes

PEBP Signaling Network in Tubers and Tuberous Root Crops

Integrated mRNA and miRNA transcriptome analysis on the regulational of mechanism tuber expansion in Yam

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