wild sorghum
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Genes ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 140
Author(s):  
Max Cowan ◽  
Birger Lindberg Møller ◽  
Sally Norton ◽  
Camilla Knudsen ◽  
Christoph Crocoll ◽  
...  

Domestication has resulted in a loss of genetic diversity in our major food crops, leading to susceptibility to biotic and abiotic stresses linked with climate change. Crop wild relatives (CWR) may provide a source of novel genes potentially important for re-gaining climate resilience. Sorghum bicolor is an important cereal crop with wild relatives that are endemic to Australia. Sorghum bicolor is cyanogenic, but the cyanogenic status of wild Sorghum species is not well known. In this study, leaves of wild species endemic in Australia are screened for the presence of the cyanogenic glucoside dhurrin. The direct measurement of dhurrin content and the potential for dhurrin-derived HCN release (HCNp) showed that all the tested Australian wild species were essentially phenotypically acyanogenic. The unexpected low dhurrin content may reflect the variable and generally nutrient-poor environments in which they are growing in nature. Genome sequencing of six CWR and PCR amplification of the CYP79A1 gene from additional species showed that a high conservation of key amino acids is required for correct protein function and dhurrin synthesis, pointing to the transcriptional regulation of the cyanogenic phenotype in wild sorghum as previously shown in elite sorghum.


Nature Plants ◽  
2021 ◽  
Author(s):  
Yongfu Tao ◽  
Hong Luo ◽  
Jiabao Xu ◽  
Alan Cruickshank ◽  
Xianrong Zhao ◽  
...  

Crop Science ◽  
2020 ◽  
Author(s):  
Grace Ochieng ◽  
Kahiu Ngugi ◽  
Lydia N. Wamalwa ◽  
Eric Manyasa ◽  
Nicoleta Muchira ◽  
...  

2020 ◽  
Vol 11 ◽  
Author(s):  
Galaihalage K. S. Ananda ◽  
Harry Myrans ◽  
Sally L. Norton ◽  
Roslyn Gleadow ◽  
Agnelo Furtado ◽  
...  

Author(s):  
K. Subramanya Sastry ◽  
Bikash Mandal ◽  
John Hammond ◽  
S. W. Scott ◽  
R. W. Briddon
Keyword(s):  

Plant Disease ◽  
2018 ◽  
Vol 102 (11) ◽  
pp. 2341-2351 ◽  
Author(s):  
K. V. Xavier ◽  
E. S. G. Mizubuti ◽  
M. V. Queiroz ◽  
S. Chopra ◽  
L. Vaillancourt

Anthracnose caused by Colletotrichum sublineola is an important disease of cultivated sorghum (Sorghum bicolor) worldwide. Anthracnose is also common on the ubiquitous wild sorghum relative Johnsongrass (S. halepense). Analysis of repetitive molecular fingerprinting markers revealed that isolates of C. sublineola from both hosts in the southeastern United States were genotypically diverse, with relatively few haplotypes found in more than one location. With few exceptions, isolates recovered from S. bicolor belonged to a population that was genetically distinct from the population recovered from S. halepense. Twenty-three isolates from cultivated sorghum were all pathogenic to at least one of 13 heritage inbred lines of S. bicolor. In all, 4 of 10 isolates from S. halepense were also pathogenic to one or more of the lines, while the rest caused no disease in greenhouse assays. The four pathogenic isolates from S. halepense were less aggressive, on average, than isolates from S. bicolor, although the ranges overlapped. Pathogenicity tests involving 15 representative pathogenic isolates from S. bicolor and S. halepense on eight heritage inbred lines of S. bicolor identified 12 races. The combined results of this study demonstrated that C. sublineola comprises two separate host-associated subpopulations in the field, even though some isolates from S. halepense were able to cause disease on S. bicolor under ideal greenhouse conditions. Nonetheless, the apparent existence of infrequent cross-infection events in the field, indicated by molecular fingerprinting, suggests that Johnsongrass has the potential to serve as a refuge and an incubator for genetic diversity in C. sublineola, which can complicate efforts to develop and deploy resistant sweet sorghum varieties in the region.


2018 ◽  
Vol 11 (2) ◽  
pp. 170089 ◽  
Author(s):  
Yongfu Tao ◽  
Emma Mace ◽  
Barbara George‐Jaeggli ◽  
Colleen Hunt ◽  
Alan Cruickshank ◽  
...  
Keyword(s):  

2017 ◽  
Vol 8 ◽  
Author(s):  
Dorothy A. Mbuvi ◽  
Clet W. Masiga ◽  
Eric Kuria ◽  
Joel Masanga ◽  
Mark Wamalwa ◽  
...  

2015 ◽  
Vol 14 (17) ◽  
pp. 1475-1492
Author(s):  
O. Magomere Titus ◽  
K. Ngugi Eliud ◽  
D. Obukosia Silas ◽  
Mutitu Eunice ◽  
I. Shibairo Solomon

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