scholarly journals Effects of jasmonic acid on root development in non-storage root forming line of sweetpotato related wild species, Ipomoea trifida.

Root Research ◽  
1997 ◽  
Vol 6 (3) ◽  
pp. 105-107
Author(s):  
Makoto NAKATANI
Keyword(s):  
Jasmonic Acid ◽  
Root Development ◽  
Wild Species ◽  
Storage Root ◽  
Ipomoea Trifida ◽  
Related Wild Species

scholarly journals The wild sweetpotato (Ipomoea trifida) genome provides insights into storage root development

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ming Li ◽  
Songtao Yang ◽  
Wei Xu ◽  
Zhigang Pu ◽  
Junyan Feng ◽  
...  
Keyword(s):  
Root Development ◽  
Storage Root ◽  
Ipomoea Trifida ◽  
Storage Root Development

Compensation Response of Drip-irrigated Sugar Beets (Beta vulgaris L.) to Different Water Deficits during Storage Root Development

2016 ◽  
Vol 42 (11) ◽  
pp. 1727
Author(s):  
Yang-Yang LI ◽  
Cong FEI ◽  
Jing CUI ◽  
Kai-Yong WANG ◽  
Fu-Yu MA ◽  
...  
Keyword(s):  
Beta Vulgaris ◽  
Root Development ◽  
Storage Root ◽  
Sugar Beets ◽  
Water Deficits ◽  
Storage Root Development

scholarly journals A low-cost aeroponic phenotyping system for storage root development: unravelling the below-ground secrets of cassava (Manihot esculenta)

Plant Methods ◽  
2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Michael Gomez Selvaraj ◽  
Maria Elker Montoya-P ◽  
John Atanbori ◽  
Andrew P. French ◽  
Tony Pridmore
Keyword(s):  
Root Growth ◽  
Root Development ◽  
Low Cost ◽  
Root Traits ◽  
Suitable Model ◽  
Root Initiation ◽  
Storage Root ◽  
Economic Traits ◽  
Storage Roots ◽  
Storage Root Development

Abstract Background Root and tuber crops are becoming more important for their high source of carbohydrates, next to cereals. Despite their commercial impact, there are significant knowledge gaps about the environmental and inherent regulation of storage root (SR) differentiation, due in part to the innate problems of studying storage roots and the lack of a suitable model system for monitoring storage root growth. The research presented here aimed to develop a reliable, low-cost effective system that enables the study of the factors influencing cassava storage root initiation and development. Results We explored simple, low-cost systems for the study of storage root biology. An aeroponics system described here is ideal for real-time monitoring of storage root development (SRD), and this was further validated using hormone studies. Our aeroponics-based auxin studies revealed that storage root initiation and development are adaptive responses, which are significantly enhanced by the exogenous auxin supply. Field and histological experiments were also conducted to confirm the auxin effect found in the aeroponics system. We also developed a simple digital imaging platform to quantify storage root growth and development traits. Correlation analysis confirmed that image-based estimation can be a surrogate for manual root phenotyping for several key traits. Conclusions The aeroponic system developed from this study is an effective tool for examining the root architecture of cassava during early SRD. The aeroponic system also provided novel insights into storage root formation by activating the auxin-dependent proliferation of secondary xylem parenchyma cells to induce the initial root thickening and bulking. The developed system can be of direct benefit to molecular biologists, breeders, and physiologists, allowing them to screen germplasm for root traits that correlate with improved economic traits.

scholarly journals Comparative analysis of chloroplast genomes of cultivars and wild species of sweetpotato (Ipomoea batatas [L.] Lam)

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shizhuo Xiao ◽  
Pan Xu ◽  
Yitong Deng ◽  
Xibin Dai ◽  
Lukuan Zhao ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Genetic Structure ◽  
Chloroplast Genome ◽  
Wild Species ◽  
Ipomoea Batatas ◽  
Nuclear Genome ◽  
Ipomoea Trifida ◽  
Chloroplast Markers ◽  
Chloroplast Genomes ◽  
Chloroplast Dna Markers

Abstract Background Sweetpotato (Ipomoea batatas [L.] Lam.) is an important food crop. However, the genetic information of the nuclear genome of this species is difficult to determine accurately because of its large genome and complex genetic background. This drawback has limited studies on the origin, evolution, genetic diversity and other relevant studies on sweetpotato. Results The chloroplast genomes of 107 sweetpotato cultivars were sequenced, assembled and annotated. The resulting chloroplast genomes were comparatively analysed with the published chloroplast genomes of wild species of sweetpotato. High similarity and certain specificity were found among the chloroplast genomes of Ipomoea spp. Phylogenetic analysis could clearly distinguish wild species from cultivars. Ipomoea trifida and Ipomoea tabascana showed the closest relationship with the cultivars, and different haplotypes of ycf1 could be used to distinguish the cultivars from their wild relatives. The genetic structure was analyzed using variations in the chloroplast genome. Compared with traditional nuclear markers, the chloroplast markers designed based on the InDels on the chloroplast genome showed significant advantages. Conclusions Comparative analysis of chloroplast genomes of 107 cultivars and several wild species of sweetpotato was performed to help analyze the evolution, genetic structure and the development of chloroplast DNA markers of sweetpotato.

scholarly journals Effect of Drought on Storage Root Development and Gene Expression Profile of Sweetpotato under Greenhouse and Field Conditions

2014 ◽  
Vol 139 (3) ◽  
pp. 317-324 ◽  
Author(s):  
Julio Solis ◽  
Arthur Villordon ◽  
Niranjan Baisakh ◽  
Don LaBonte ◽  
Nurit Firon
Keyword(s):  
Drought Stress ◽  
Differential Expression ◽  
Root Development ◽  
Water Deprivation ◽  
Expression Patterns ◽  
Storage Root ◽  
Altered Expression ◽  
Sand Control ◽  
Binding Factor ◽  
Drought Conditions

Greenhouse and field culture systems were used to study the effect of drought conditions on the storage root (SR) formation in ‘Beauregard’ sweetpotato (Ipomoea batatas). In the greenhouse culture system, drought was simulated by withholding water for 5 and 10 days after transplanting (DAT) cuttings in dry sand. Control plants received water at planting and every 3 days thereafter. In the field studies, natural drought conditions and selective irrigation were used to impose water deprivation during the critical SR formation period. Greenhouse drought for 5 and 10 DAT reduced the number of SRs by 42% and 66%, respectively, compared with the controls. Field drought resulted in a 49% reduction in U.S. #1 SR yield compared with the irrigated condition. Quantitative real-time polymerase chain reaction (PCR) analysis showed differential expression of a set of sweetpotato transcription factors and protein kinases among greenhouse-grown plants subjected to well-watered conditions and water deficit during 5 DAT. A significant enhancement of expression was observed for known drought stress-associated genes such as an abscisic acid-responsive elements-binding factor, dehydration-responsive element-binding factor, and homeo-domain-zip proteins. Members of calcium-binding proteins showed differential expression under drought stress. For the first time it is reported that knotted1-like homeobox and BEL1-like genes showed altered expression in response to drought stress under a greenhouse condition. In summary, the results suggest that water deprivation during the SR formation period influences root development and expression patterns of stress-responsive genes and those previously found associated with SR formation in sweetpotato.

Sweetpotato root development influences susceptibility to black rot caused by the fungal pathogen Ceratocystis fimbriata

2021 ◽  
Author(s):  
Camilo Humberto Parada Rojas ◽  
Kenneth Pecota ◽  
Christie Almeyda ◽  
G. Craig Yencho ◽  
Lina Quesada-Ocampo
Keyword(s):  
Root Development ◽  
Disease Incidence ◽  
Black Rot ◽  
Wild Relative ◽  
Storage Root ◽  
Storage Roots ◽  
Ceratocystis Fimbriata ◽  
Breeding Lines ◽  
Below Ground ◽  
Storage Root Development

Black rot of sweetpotato caused by Ceratocystis fimbriata, is an important reemerging disease threatening sweetpotato production in the United States. This study assessed disease susceptibility of the storage root surface, storage root cambium, and slips (vine cuttings) of 48 sweetpotato cultivars, advanced breeding lines, and wild relative accessions. We also characterized the effect of storage root development on susceptibility to C. fimbriata. None of the cultivars examined at the storage root level were resistant, with most cultivars exhibiting similar levels of susceptibility. In storage roots, Jewel and Covington were the least susceptible and significantly different from White Bonita, the most susceptible cultivar. In the slip, significant differences in disease incidence were observed for above and below ground plant structures among cultivars, advanced breeding lines, and wild relative accessions. Burgundy and Ipomoea littoralis displayed less below ground disease incidence as compared to NASPOT 8, Sunnyside and LSU-417, the most susceptible cultivars. Correlation of black rot susceptibility between storage roots and slips was not significant, suggesting that slip assays are not useful to predict resistance in storage roots. Immature, early developing storage roots were comparatively more susceptible than older, fully developed storage roots. The high significant correlation between storage root cross-section area and cross-sectional lesion ratio suggests the presence of an unfavorable environment for C. fimbriata as the storage root develops. Incorporating applications of effective fungicides at transplanting and during early storage root development when sweetpotato tissues are most susceptible to black rot infection may improve disease management efforts.

Diversity of rice and related wild species in Africa.

2013 ◽  
pp. 87-94 ◽  
Author(s):  
K. A. Sanni ◽  
D. D. Tia ◽  
D. K. Ojo ◽  
A. S. Ogunbayo ◽  
M. Sikirou ◽  
...  
Keyword(s):  
Wild Species ◽  
Related Wild Species
Sign in / Sign up

Export Citation Format

Share Document