Simple sequence repeats (SSRs) are widespread units on genome sequences, and play many important roles in plants. In order to reveal the evolution of plant genomes, we investigated evolutionary regularities SSRs during species kingdom by analysis twelve sequenced sequences. First, studied main were those which contain 1–3 nucleotides combination. Second, mononucleotide SSRs, A/T percentage gradually increased along with plants (except for P. patens). With increase repeat number C....

Abstract Background Sweetpotato ( Ipomoea batatas (L.) Lam.) serves as an important food source for human beings. β-galactosidase (bgal) is a glycosyl hydrolase involved in cell wall modification, which plays essential roles plant development and environmental stress adaptation. However, the function of bgal genes sweetpotato remains unclear. Results In this study, 17 Ibbgal ) were identified sweetpotato, classified into seven subfamilies using interspecific phylogenetic comparative...

Sweetpotato is easily overgrown because of improved production conditions and soil fertility. In this study, normal sweetpotato plants were obtained from the long vine cultivar J18 (J18) short X32 (X32) in a field experiment with different nitrogen (N) treatments (0, 120, 240 kg N ha− 1). The carbon (C)–N metabolism endogenous hormone contents compared between plants. Results revealed that total C content C/N ratios leaves significantly lower than those at 75 days after planting (DAP) 105...

Sweet potato (Ipomoea batatas (L.) Lam.) is one of the most important crops with high storage roots yield. The formation and expansion rate root (SR) plays a crucial role in production sweet potato. Lignin affects SR formation; however, molecular mechanisms lignin development have been lacking. To reveal problem, we performed transcriptome sequencing harvested at 32, 46, 67 days after planting (DAP) to analyze two lines, Jishu25 Jishu29, which Jishu29 was early had higher A total 52,137...

Introduction The higher plant transcription factor C2H2 zinc finger protein (C2H2-ZFP) is essential for growth, development, and stress response. There are limited studies on C2H2-ZFP genes in sweetpotato, despite a substantial number of having been systematically found plants. Methods In this work, 178 were distributed randomly 15 chromosomes, given new names according to where they located. These members the gene family separated into six branches, as shown by phylogenetic tree. 24 tandem...

The root quality of sweet potato cultivated during the summer season is poor in northern China; thus, this study was conducted to determine whether could be improved through mulching with plastic film (MPF). effect MPF on starch and its composition, activity synthesis enzymes, other quality-related parameters were investigated two purple flesh cultivars, Jishu 18 Ayamurasaki (Aya). results indicated that dry matter, anthocyanin content, adenosine triphosphate (ATP), content higher both...

Small auxin-upregulated RNAs (

To characterize the differences in photosynthate distribution and transport between nitrogen(N)-tolerant N-susceptible sweetpotato cultivars under different N conditions, three levels, including 0 (N0), 120 (N120), 240 kg ha−1 (N240), were used field experiments with Jishu26 (J26) Xushu32 (X32) 2015 2016. The results from both years revealed that high application reduced tuberous root yield, tuber/vine rate of carbon-13 (13C), top-to-base (three equal segments stem divided fifth opened leaf...

The arid and semi-arid regions of Loess Plateau in China are major winter wheat producing areas where water shortage is limiting production.Present study was designed to analyzed the consumption characteristics plastic film-mulched under different seeding rates order attain a high yield dryland wheat.Wheat sown Shanxi province, during 2014-2016 growing seasons at (60, 75, 90, 105 120 kg h -1 ) ridged film mulching flat sowing without mulching.The results showed that had increased total...

Abstract Sweetpotato leaf curl virus (SPLCV) causes symptoms in sweetpotato [ Ipomoea batatas (L.) Lam]. These disappear under high temperature. Previous studies have shown that SPCLV reduces storage root yield sweetpotato. However, knowledge of SPLCV's effect on quality is limited. In this study, we surveyed the SPLCV and edible Quantitative real‐time reverse transcriptase–polymerase chain reaction paraffin section results showed mRNA level distribution density spongy mesophyll cells...

Abstract Background Sweet potato ( Ipomoea batatas (L . ) Lam.) is a highly heterozygous autohexaploid crop with high yield and anthocyanin content. Purple sweet the main source of anthocyanins, mechanism biosynthesis in storage roots has not been fully revealed. Results In order to reveal identify new homologous genes involved potato, we used Ningzishu 1 Jizishu 2 as parents construct F hybrid population. Seven anthocyanin-containing lines three anthocyanin-free were selected for...

In recent years, sweet potato has been cultivated not only in marginal lands but also fertile plains northern China. The nitrogen (N)-rich soil may inhibit storage root formation. Cultivars with different N tolerances and split application of reduced rates should be considered. To investigate the effects on utilization, differentiation, formation cultivars tolerances, Jishu26 (J26) Xushu32 (X32) were treated three levels supplied by urea: 0 (N0), 200 (N1) 400 mg kg-1 (N2). With increasing...

Plant height is one of the key agronomic traits for improving yield sweetpotato. The phytohormones, especially gibberellins (GAs) are crucial to regulate plant height. 9-cis-epoxycarotenoid dioxygenase (NCED) enzyme abscisic acid (ABA) biosynthesis signalling in higher plants. However, its role regulating has not been reported date. Here, we cloned a NCED gene, IbNCED1, from sweetpotato cultivar Jishu26. This gene encoded 587-amino polypeptide containing an superfamily domain. expression...

Plant height is one of the key agronomic traits for improving yield sweet potato. Phytohormones, especially gibberellins (GAs), are crucial to regulate plant height. The enzyme 9-cis-epoxycarotenoid dioxygenase (NCED) abscisic acid (ABA) biosynthesis signalling in higher plants. However, its role regulating has not been reported date. Here, we cloned a new NCED gene, IbNCED1, from potato cultivar Jishu26. This gene encoded 587-amino polypeptide containing an superfamily domain. expression...

Sweetpotatoes are important food crops with high starch and carotene content. However, studies concerning the molecular biology of these limited. In this paper, we selected two varieties sweetpotato (Zhengshu 20 Luoxushu 8) for transcriptome analysis. De novo RNA sequencing sweetpotatoes (tuberous roots, stems leaves) under field conditions was performed using an Illumina Hiseq 2500 platform PE125. Approximately 34.4 G nucleotide bases were sequenced. Following assembly, 176,167 transcripts...

To examine the effects of uniconazole (UCZ) on distribution and transport photosynthate in sweetpotatoes, three spraying levels UCZ, 0 (control), 50 100 mg L−1, were exposed to an experimental field cultivated with Jishu26 ('J26ʹ) Xushu32 ('X32ʹ) varieties. Compared control, carbon-13 (13C) was significantly higher tuberous roots both varieties treated UCZ. In addition, UCZ treatments promoted a desirable top-to-base sucrose gradient significant greater declines top-to-bottom amino acid...

Abstract Sweet potato is an important food crop with high starch content. It a hexaploid species, for which the chromosomes have not yet been well characterized. In this study, we used 856 SRAP primer pairs to analyse 240 individuals from mapping population, were derived hybrid F 1 generation of ‘Luoxushu 8’ (female) and ‘Zhengshu 20’ (male). Genetic linkage maps two parents constructed. female parent (‘Luoxushu 8’), map consisted 1391 markers, length was estimated be 10,188.4 cM average...

To verify an effective approach for alleviating problems associated with the consecutive monoculture of sweet potato, five fertilizer treatments were designed under plastic film-mulched, drip-fertigated conditions in fields continuously planted potato over years. These included: (1) no application, (2) basic application water-soluble (WS) fertilizer, (3) biofertilizer (BF) and WS (4) split (5) combined BF fertilizer. The effects applications on yield, quality, soil properties evaluated....

Abstract Background: Sweetpotato ( Ipomoea batatas (L.) Lam.) serves as an important food source for human beings. β-galactosidase (β-gal) is a glycosyl hydrolase involved in cell wall modification, which plays essential roles plant development and environmental stress adaptation. However, the function of β-gals genes sweetpotato has yet to be reported. Results: In this study, 17 Ibbgal ) were identified sweetpotato, classified into seven subfamilies using interspecific phylogenetic...