scholarly journals Transgenic wheat expressing a barley class II chitinase gene has enhanced resistance against Fusarium graminearum

2008 ◽  
Vol 59 (9) ◽  
pp. 2371-2378 ◽  
Author(s):  
S. Shin ◽  
C. A. Mackintosh ◽  
J. Lewis ◽  
S. J. Heinen ◽  
L. Radmer ◽  
...  
2001 ◽  
Vol 103 (2-3) ◽  
pp. 297-306 ◽  
Author(s):  
B. G. de los Reyes ◽  
C. M. Taliaferro ◽  
M. P. Anderson ◽  
U. Melcher ◽  
S. McMaugh

2017 ◽  
Vol 11 (4) ◽  
pp. 229-238 ◽  
Author(s):  
Ji-Nam Kang ◽  
Mi-Young Park ◽  
Woo-Nam Kim ◽  
Hong-Gyu Kang ◽  
Hyeon-Jin Sun ◽  
...  

2013 ◽  
Vol 22 (5) ◽  
pp. 939-947 ◽  
Author(s):  
Xuan Huang ◽  
Jian Wang ◽  
Zhen Du ◽  
Chen Zhang ◽  
Lan Li ◽  
...  

2015 ◽  
Vol 9 (3) ◽  
pp. 142-147
Author(s):  
Rejeki Siti Ferniah ◽  
Rina Sri Kasiamdari ◽  
Achmadi Priyatmojo ◽  
Budi Setiadi Daryono

2013 ◽  
Vol 38 (5) ◽  
pp. 773-779 ◽  
Author(s):  
Jin-Feng WANG ◽  
Li-Pu DU ◽  
Zhao LI ◽  
Su-Ping HUANG ◽  
Xing-Guo YE ◽  
...  

2021 ◽  
Vol 22 (2) ◽  
pp. 870
Author(s):  
Liang Ma ◽  
Yali Sun ◽  
Xinsen Ruan ◽  
Pei-Cheng Huang ◽  
Shi Wang ◽  
...  

Gibberella stalk rot (GSR) by Fusarium graminearum causes significant losses of maize production worldwide. Jasmonates (JAs) have been broadly known in regulating defense against pathogens through the homeostasis of active JAs and COI-JAZ-MYC function module. However, the functions of different molecular species of JAs and COI-JAZ-MYC module in maize interactions with Fusarium graminearum and regulation of diverse metabolites remain unknown. In this study, we found that exogenous application of MeJA strongly enhanced resistance to GSR. RNA-seq analysis showed that MeJA activated multiple genes in JA pathways, which prompted us to perform a genome-wide screening of key JA signaling components in maize. Yeast Two-Hybrid, Split-Luciferase, and Pull-down assays revealed that the JA functional and structural mimic coronatine (COR) functions as an essential ligand to trigger the interaction between ZmCOIa and ZmJAZ15. By deploying CRISPR-cas9 knockout and Mutator insertional mutants, we demonstrated that coi1a mutant is more resistant, whereas jaz15 mutant is more susceptible to GSR. Moreover, JA-deficient opr7-5opr8-2 mutant displayed enhanced resistance to GSR compared to wild type. Together, these results provide strong evidence that ZmJAZ15 plays a pivotal role, whereas ZmCOIa and endogenous JA itself might function as susceptibility factors, in maize immunity to GSR.


2020 ◽  
Vol 110 (5) ◽  
pp. 1056-1066 ◽  
Author(s):  
Guixia Hao ◽  
Matthew G. Bakker ◽  
Hye-Seon Kim

The fungal pathogen Fusarium graminearum causes Fusarium head blight (FHB) on wheat, barley, and other grains. FHB results in yield reductions and contaminates grain with trichothecene mycotoxins, which threaten food safety and food security. Innovative mechanisms for controlling FHB are urgently needed. We have previously shown that transgenic tobacco and citrus plants expressing a modified thionin (Mthionin) exhibited enhanced resistance toward several bacterial pathogens. The aim of this study was to investigate whether overexpression of Mthionin could be similarly efficacious against F. graminearum, and whether transgenic expression of Mthionin impacts the plant microbiome. Transgenic Arabidopsis plants expressing Mthionin were generated and confirmed. When challenged with F. graminearum, Mthionin-expressing plants showed less disease and fungal biomass in both leaves and inflorescences compared with control plants. When infiltrated into leaves, macroconidia of F. graminearum germinated at lower rates and produced less hyphal growth in Arabidopsis leaves expressing Mthionin. Moreover, marker genes related to defense signaling pathways were expressed at significantly higher levels after F. graminearum infection in Mthionin transgenic Arabidopsis plants. However, Mthionin expression did not appreciably alter the overall microbiome associated with transgenic plants grown under controlled conditions; across leaves and roots of Mthionin-expressing and control transgenic plants, only a few bacterial and fungal taxa differed, and differences between Mthionin transformants were of similar magnitude compared with control plants. In sum, our data indicate that Mthionin is a promising candidate to produce transgenic crops for reducing FHB severity and ultimately mycotoxin contamination.


Sign in / Sign up

Export Citation Format

Share Document