Mutation in sorghum
            <i>LOW GERMINATION STIMULANT 1</i>
            alters strigolactones and causes
            <i>Striga</i>
            resistance

Gobena, Daniel; Shimels, Mahdere; Rich, Patrick J.; Ruyter-Spira, Carolien; Bouwmeester, Harro J.; Satish, K.; Mengiste, Tesfaye; Ejeta, Gebisa

doi:10.1073/pnas.1618965114

Cited by 193 publications

(191 citation statements)

References 34 publications

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“…QTLs for resistance to Striga Races 1 and 3 were located on a different chromosome/linkage group than the inversion on Vu03, ruling out the inversion as the basis of those resistances. However, it was noted that the sorghum gene Sobic.005G213600 regulating Striga resistance via a presence/absence variation (Gobena et al ., ) encodes a sulfotransferase that is homologous to the cowpea gene Vigun03 g220400 , which is located inside the inverted region on Vu03 (Data S6) and is highly expressed in root tissue (https://legumeinfo.org/feature/Vigna/unguiculata/gene/vigun.IT97K-499-35.gnm1.ann1.Vigun03g220400#pane=geneexpressionprofile). Therefore, it seems possible that the region containing Vigun03 g220400 may affect Striga interactions in a manner that has not yet been discovered; this hypothesis merits further testing.…”

Section: Resultsmentioning

confidence: 99%

The genome of cowpea (Vigna unguiculata [L.] Walp.)

et al. 2019

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SummaryCowpea (Vigna unguiculata [L.] Walp.) is a major crop for worldwide food and nutritional security, especially in sub‐Saharan Africa, that is resilient to hot and drought‐prone environments. An assembly of the single‐haplotype inbred genome of cowpea IT97K‐499‐35 was developed by exploiting the synergies between single‐molecule real‐time sequencing, optical and genetic mapping, and an assembly reconciliation algorithm. A total of 519 Mb is included in the assembled sequences. Nearly half of the assembled sequence is composed of repetitive elements, which are enriched within recombination‐poor pericentromeric regions. A comparative analysis of these elements suggests that genome size differences between Vigna species are mainly attributable to changes in the amount of Gypsy retrotransposons. Conversely, genes are more abundant in more distal, high‐recombination regions of the chromosomes; there appears to be more duplication of genes within the NBS‐LRR and the SAUR‐like auxin superfamilies compared with other warm‐season legumes that have been sequenced. A surprising outcome is the identification of an inversion of 4.2 Mb among landraces and cultivars, which includes a gene that has been associated in other plants with interactions with the parasitic weed Striga gesnerioides. The genome sequence facilitated the identification of a putative syntelog for multiple organ gigantism in legumes. A revised numbering system has been adopted for cowpea chromosomes based on synteny with common bean (Phaseolus vulgaris). An estimate of nuclear genome size of 640.6 Mbp based on cytometry is presented.

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Section: Resultsmentioning

confidence: 99%

The genome of cowpea (Vigna unguiculata [L.] Walp.)

et al. 2019

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“…Lastly, we evaluated the effect of our synthetic molecules on seed germination of a parasitic weed, Orobanche cumana, which causes serious damage in sunflower production . Thus, sunflower‐derived heliolactone should be promising germination stimulant for Orobanche cumana .…”

Section: Resultsmentioning

confidence: 99%

Total Synthesis and Biological Evaluation of Heliolactone

Yoshimura

Fonné‐Pfister

Screpanti

et al. 2019

Helvetica Chimica Acta

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Strigolactones are phytohormones, which affect diverse aspects of plant growth and development with potential application in modern agriculture. Recently, heliolactone has been isolated as a non‐canonical type of strigolactone from the root exudates of sunflower, and it could be involved in signaling in the rhizosphere as well as in planta. However, its biological activity is yet to be evaluated, due to its relative chemical instability and its low natural abundance. Herein, we describe the gram‐scale synthesis of heliolactone and its derivatives by using Stille cross‐coupling as the key bond‐forming reaction, and we disclose some of their biological activities (soil stability, binding ability to strigolactone receptor, corn germination, sunflower germination, Orobanche cumana germination and leaf senescence) in comparison with other canonical and non‐canonical strigolactones.

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“…Benth [21]. The seeds of cultivar BRS330 were from “Embrapa Milho e Sorgo” (Brazil) and the seeds of cultivar SRN-39 originally released in Niger and Sudan (Africa) [22, 23] were provided by the Laboratory of Plant Physiology—Wageningen University (Netherlands).…”

Section: Methodsmentioning

confidence: 99%

Co-Variation of Bacterial and Fungal Communities in Different Sorghum Cultivars and Growth Stages is Soil Dependent

2017

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Rhizosphere microbial community composition can be influenced by different biotic and abiotic factors. We investigated the composition and co-variation of rhizosphere bacterial and fungal communities from two sorghum genotypes (BRS330 and SRN-39) in three different plant growth stages (emergence of the second leaf, (day10), vegetative to reproductive differentiation point (day 35), and at the last visible emerged leaf (day 50)) in two different soil types, Clue field (CF) and Vredepeel (VD). We observed that either bacterial or fungal community had its composition stronger influenced by soil followed by plant growth stage and cultivar. However, the influence of plant growth stage was higher on fungal community composition than on the bacterial community composition. Furthermore, we showed that sorghum rhizosphere bacterial and fungal communities can affect each other’s composition and structure. The decrease in relative abundance of the fungus genus Gibberella over plant growth stages was followed by decrease of the bacterial families Oxalobacteracea and Sphingobacteriacea. Although cultivar effect was not the major responsible for bacterial and fungal community composition, cultivar SRN-39 showed to promote a stronger co-variance between bacterial and fungal communities.Electronic supplementary materialThe online version of this article (10.1007/s00248-017-1108-6) contains supplementary material, which is available to authorized users.

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Mutation in sorghum LOW GERMINATION STIMULANT 1 alters strigolactones and causes Striga resistance

Cited by 193 publications

References 34 publications

The genome of cowpea (Vigna unguiculata [L.] Walp.)

The genome of cowpea (Vigna unguiculata [L.] Walp.)

Total Synthesis and Biological Evaluation of Heliolactone

Co-Variation of Bacterial and Fungal Communities in Different Sorghum Cultivars and Growth Stages is Soil Dependent

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