The relationship between primary metabolites in reproductive structures of cowpea Vigna unguiculata (Fabaceae: Papilionidae) cultivars and field resistance to the flower bud thrips Megalurothrips sjostedti (Thysanoptera: Thripidae)

2006 ◽  
Vol 26 (01) ◽  
Author(s):  
O.Y. Alabi ◽  
J.A. Odebiyi ◽  
M. Tamò
Keyword(s):  
Vigna Unguiculata ◽  
Field Resistance ◽  
Flower Bud ◽  
Megalurothrips Sjostedti ◽  
Primary Metabolites ◽  
Reproductive Structures ◽  
The Relationship

scholarly journals Genetic Analysis of Flower Bud Thrips Resistance (Megalurothrips sjostedti) in Cowpea (Vigna unguiculata [L.] Walp.) in Burkina Faso

2019 ◽  
Vol 15 (18) ◽  
Author(s):  
Hamadou Sidibe ◽  
Benoit Joseph Batieno ◽  
Tinga Jeremy Ouedraogo ◽  
Jean-Baptiste Tignegre ◽  
Mahamadou Sawadogo
Keyword(s):  
Genetic Analysis ◽  
Burkina Faso ◽  
Vigna Unguiculata ◽  
Flower Bud ◽  
Megalurothrips Sjostedti

scholarly journals The Relationship between AGAMOUS and Cytokinin Signaling in the Establishment of Carpeloid Features

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 827
Author(s):  
Andrea Gómez-Felipe ◽  
Daniel Kierzkowski ◽  
Stefan de Folter
Keyword(s):  
Regulatory Network ◽  
Dependent Manner ◽  
Mads Box ◽  
Type B ◽  
Cytokinin Signaling ◽  
Reproductive Structures ◽  
Carpel Development ◽  
Gene Regulatory ◽  
The Relationship ◽  
Gynoecium Development

Gynoecium development is dependent on gene regulation and hormonal pathway interactions. The phytohormones auxin and cytokinin are involved in many developmental programs, where cytokinin is normally important for cell division and meristem activity, while auxin induces cell differentiation and organ initiation in the shoot. The MADS-box transcription factor AGAMOUS (AG) is important for the development of the reproductive structures of the flower. Here, we focus on the relationship between AG and cytokinin in Arabidopsis thaliana, and use the weak ag-12 and the strong ag-1 allele. We found that cytokinin induces carpeloid features in an AG-dependent manner and the expression of the transcription factors CRC, SHP2, and SPT that are involved in carpel development. AG is important for gynoecium development, and contributes to regulating, or else directly regulates CRC, SHP2, and SPT. All four genes respond to either reduced or induced cytokinin signaling and have the potential to be regulated by cytokinin via the type-B ARR proteins. We generated a model of a gene regulatory network, where cytokinin signaling is mainly upstream and in parallel with AG activity.

Flower bud thrips ( Megalurothrips sjostedti Trybom) population diversity and sources of resistance among Benin cowpea germplasm

2021 ◽  
Author(s):  
Symphorien Agbahoungba ◽  
Benjamin Datinon ◽  
Maxwell Billah ◽  
Hospice Tossou ◽  
Eric Agoyi ◽  
...  
Keyword(s):  
Population Diversity ◽  
Flower Bud ◽  
Sources Of Resistance ◽  
Megalurothrips Sjostedti

scholarly journals Metabolite profile comparison of a graft chimera ‘Hongrou Huyou’ (Citrus changshan-huyou + Citrus unshiu) and its two donor plants

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Min Zhang ◽  
Luyang Jing ◽  
Qun Wu ◽  
Kaijie Zhu ◽  
Fuzhi Ke ◽  
...  
Keyword(s):  
Principal Component ◽  
Metabolite Profile ◽  
Citrus Unshiu ◽  
Primary Metabolites ◽  
Citrus Breeding ◽  
Metabolite Profiles ◽  
Germacrene D ◽  
The Relationship ◽  
Different Tissues ◽  
Juice Sacs

Abstract Background Chimeras synthesized artificially by grafting are crucial to the breeding of perennial woody plants. ‘Hongrou Huyou’ (Citrus changshan-huyou + Citrus unshiu) is a new graft chimera originating from the junction where a Citrus changshan-huyou (“C”) scion was top-grafted onto a stock Satsuma mandarin ‘Owari’ (C. unshiu, “O”). The chimera was named OCC because the cell layer constitutions were O for Layer 1(L1) and C for L2 and L3. In this study, profiles of primary metabolites, volatiles and carotenoids derived from different tissues in OCC and the two donors were investigated, with the aim of determining the relationship between the layer donors and metabolites. Results The comparison of the metabolite profiles showed that the amount and composition of metabolites were different between the peels and the juice sacs, as well as between OCC and each of the two donors. The absence or presence of specific metabolites (such as the carotenoids violaxanthin and β-cryptoxanthin, the volatile hydrocarbon germacrene D, and the primary metabolites citric acid and sorbose) in each tissue was identified in the three phenotypes. According to principal component analysis (PCA), overall, the metabolites in the peel of the chimera were derived from donor C, whereas those in the juice sac of the chimera came from donor O. Conclusion The profiles of primary metabolites, volatiles and carotenoids derived from the peels and juice sacs of OCC and the two donors were systematically compared. The content and composition of metabolites were different between the tissues and between OCC and the each of the two donors. A clear donor dominant pattern of metabolite inheritance was observed in the different tissues of OCC and was basically consistent with the layer origin; the peel of the chimera was derived from C, and the juice sacs of the chimera came from O. These profiles provide potential chemical markers for genotype differentiation, citrus breeding assessment, and donor selection during artificial chimera synthesis.

Evaluation of field resistance toStriga hermonthica(Del.) Benth. inSorghum bicolor(L.) Moench. The relationship with strigolactones

2016 ◽  
Vol 72 (11) ◽  
pp. 2082-2090 ◽  
Author(s):  
Nasreldin Mohemed ◽  
Tatsiana Charnikhova ◽  
Evert J Bakker ◽  
Aad van Ast ◽  
Abdelgabar GT Babiker ◽  
...  
Keyword(s):  
Field Resistance ◽  
The Relationship

scholarly journals Screening Twenty Cowpea (Vigna unguiculata (L.) Walp) Genotypes for Resistance to Thrips (Megalurothrips sjöstedti) in Burkina Faso

2018 ◽  
Vol 6 (4) ◽  
pp. 74
Author(s):  
Sidibé Hamadou ◽  
Batiéno Benoit Joseph ◽  
Tignigré Jean Baptiste De La Salle ◽  
Kusi Francis ◽  
Ouédraogo Tinga Jeremy ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Yield Loss ◽  
Research Station ◽  
High Susceptibility ◽  
Sources Of Resistance ◽  
Megalurothrips Sjostedti ◽  
Flower Thrips ◽  
Resistant Lines ◽  
Total Crop ◽  
Crop Yield Loss

Losses caused by flower thrips in cowpea are important. These pests can cause from 60% to total crop yield loss. There is, therefore , an urgent need to address this issue. This work has been undertaken to identify sources of resistance to thrips in cowpea. Twenty cowpea genotypes were screened at Kamboinsé research station under improve netting in pots.  The number of aborted flowers per line, the percentage of damage to flowers and stipules, and the number of thrips per genotype were evaluated. The results revealed the existence of six genotype of cowpea resistant to thrips. Among these genotypes three are already known thrips resistant lines (TVU1509, TVx3236 and Sanzi). Moreover, Sanzi showed interesting potentialities that maybe exploited. The new identified lines are Nafi, variety popularized in 2012 and variety KVx780-3 which is being popularized. The KVx165-14-1 (old popular variety) showed sources of tolerances while the KN1 genotype was susceptible to thrips. In another hand, all the wild genotypes showed high susceptibility to thrips.

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