Blast Disease: Historical Importance, Distribution, and Host Infectivity Across Cereal Crops

2021 ◽  
pp. 1-13
Author(s):  
H. Rajashekara ◽  
B. Jeevan ◽  
K. K. Mishra ◽  
A. R. N. S. Subbanna ◽  
Lakshmi Kant
Keyword(s):  
Blast Disease ◽  
Cereal Crops ◽  
Historical Importance

scholarly journals Correction to: Blast Disease of Cereal Crops: Evolution and Adaptation in Context of Climate Change

2021 ◽  
pp. C1-C1
Author(s):  
S. Chandra Nayaka ◽  
Rajashekara Hosahatti ◽  
Ganesan Prakash ◽  
C. Tara Satyavathi ◽  
Rajan Sharma
Keyword(s):  
Climate Change ◽  
Blast Disease ◽  
Cereal Crops

Advances in Genetics and Genomics for Management of Blast Disease in Cereal Crops

2021 ◽  
pp. 173-181
Author(s):  
B. N. Devanna ◽  
H. Rajashekara ◽  
S. Raghu ◽  
P. K. Singh ◽  
P. Jain ◽  
...  
Keyword(s):  
Blast Disease ◽  
Cereal Crops ◽  
Genetics And Genomics

scholarly journals Exploring the Distribution of Blast Resistance Alleles at the Pi2/9 Locus in Major Rice-Producing Areas of China by a Novel Indel Marker

Plant Disease ◽  
2020 ◽  
Vol 104 (7) ◽  
pp. 1932-1938
Author(s):  
Dagang Tian ◽  
Yan Lin ◽  
Ziqiang Chen ◽  
Zaijie Chen ◽  
Fang Yang ◽  
...  
Keyword(s):  
Blast Resistance ◽  
Resistance Breeding ◽  
Field Trials ◽  
Indel Marker ◽  
Blast Disease ◽  
Cereal Crops ◽  
R Genes ◽  
Rice Varieties ◽  
Environment Friendly ◽  
The World

Rice blast disease caused by the fungus Magnaporthe oryzae damages cereal crops and poses a high risk to rice production around the world. Currently, planting cultivars with resistance (R) genes is still the most environment-friendly approach to control this disease. Effective identification of R genes existing in diverse rice cultivars is important for understanding the distribution of R genes and predicting their contribution to resistance against blast isolates in regional breeding. Here, we developed a new insertion/deletion (InDel) marker, Pigm/2/9InDel, that can differentiate the cloned R genes (Pigm, Pi9, and Pi2/Piz-t) at the Pi2/9 locus. Pigm/2/9InDel combined with the marker Pi2-LRR for Pi2 was applied to determine the distribution of these four R genes among 905 rice varieties, most of which were collected from the major rice-producing regions in China. In brief, nine Pigm-containing varieties from Fujian and Guangdong provinces were identified. All of the 62 Pi2-containing varieties were collected from Guangdong, and 60 varieties containing Piz-t were from seven provinces. However, Pi9 was not found in any of the Chinese varieties. The newly identified varieties carrying the Pi2/9 alleles were further subjected to inoculation tests with regional blast isolates and field trials. Our results indicate that Pigm and Pi2 alleles have been introgressed for blast resistance breeding mainly in the Fujian and Guangdong region, and Pi9 is a valuable blast resistance resource to be introduced into China.

scholarly journals Mitochondrial dynamics and mitophagy are necessary for proper invasive growth in Rice Blast

2019 ◽  
Author(s):  
Yanjun Kou ◽  
Yunlong He ◽  
Jiehua Qiu ◽  
Shu Yazhou ◽  
Fan Yang ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Morphological Changes ◽  
Mitochondrial Dynamics ◽  
Mitochondrial Fission ◽  
Blast Disease ◽  
Cereal Crops ◽  
Mitochondrial Morphology ◽  
Invasive Growth ◽  
In Planta ◽  
Antioxidant Treatment

SUMMARYMagnaporthe oryzaecauses Blast disease, which is one of the most devastating infections in rice and several important cereal crops.M. oryzaeneeds to coordinate gene regulation, morphological changes, nutrient acquisition, and host evasion, in order to invade and proliferate within the plant tissues. Thus far, the molecular mechanisms underlying the regulation of invasive growthin plantahave remained largely unknown. We identified a precise filamentous-punctate-filamentous cycle in mitochondrial morphology duringMagnaporthe-Rice interaction. Interestingly, loss of either the mitochondrial fusion (MoFzo1) or fission (MoDnm1) machinery, or inhibition of mitochondrial fission using Mdivi-1 caused significant reduction inM. oryzaepathogenicity. Furthermore, exogenous carbon source(s) but not antioxidant treatment delayed such mitochondrial dynamics/transition during invasive growth. Such nutrient-based regulation of organellar dynamics preceded MoAtg24-mediated mitophagy, which was found to be essential for proper biotrophic development and invasive growthin planta. We propose that precise mitochondrial dynamics and mitophagy occur during the transition from biotrophy to necrotrophy, and are required for proper induction and establishment of the blast disease in rice.

scholarly journals Genome Sequence of a Unique Magnaporthe oryzae RMg-Dl Isolate from India That Causes Blast Disease in Diverse Cereal Crops, Obtained Using PacBio Single-Molecule and Illumina HiSeq2500 Sequencing

2017 ◽  
Vol 5 (7) ◽  
Author(s):  
Aundy Kumar ◽  
Neelam Sheoran ◽  
Ganesan Prakash ◽  
Arpita Ghosh ◽  
Surendra K. Chikara ◽  
...  
Keyword(s):  
Virulence Factors ◽  
Genome Sequence ◽  
Single Molecule ◽  
Magnaporthe Oryzae ◽  
Blast Disease ◽  
Cereal Crops ◽  
Whole Genome ◽  
Genetic Determinants ◽  
Content Type ◽  
Host Jump

ABSTRACT The whole-genome assembly of a unique rice isolate from India, Magnaporthe oryzae RMg-Dl that causes blast disease in diverse cereal crops is presented. Analysis of the 34.82 Mb genome sequence will aid in better understanding the genetic determinants of host range, host jump, survival, pathogenicity, and virulence factors of M. oryzae.

Formation of botanical composition of clover cereal and alfalfa cereal crops agrophytocenoses depending on sowing method

2020 ◽  
pp. 160-168
Author(s):  
I. Senyk
Keyword(s):  
Festuca Arundinacea ◽  
Global Climate ◽  
Phleum Pratense ◽  
Grass Species ◽  
Cereal Crops ◽  
Forest Steppe ◽  
Botanical Composition ◽  
Cross Sectional ◽  
Row Crops ◽  
Adverse Weather

Botanical composition of grasses is one of the most important indicators the biological value and quality of the obtained hay and pasture forage, the longevity of hayfi elds and pastures depend on. The issue of changing the botanical composition of agrophytocenoses is especially important in the context of global climate change, which in recent decades is also manifested in the territory of Ukraine, as it is possible to establish the most adapted species of legumes and cereals to adverse weather conditions and to identify eff ective technological methods of managing these processes for maximum conservation economically valuable species in the herbage. The purpose of the research is to establish the infl uence of diff erent ways of sowing of clover and alfalfa cereal crops agrophytocenoses on the formation of their botanical composition. Field studies have established diff erent eff ects of conventional in-line, cross-section and cross-sectional methods of sowing on the formation of botanical composition of grass mixtures of clover meadow (Trifolium pratense) varieties Sparta and Pavlyna with timothy meadow (Phleum pratense) and fenugreek multifl oral (Lolium multifl orum) and of agrophytocenoses of alfalfa of Sinyukha and Seraphima sowing varieties with reed fire (Festuca arundinacea Schreb) and middle wheatgrass (Elytrigia intermedia). For the average of four years of life of clover and alfalfa cereal crops agrophytocenoses, the highest proportion of legume component was observed with split-cross sowing – 51.6 % for Sparta, 53.1 % for Pavlyna, 60.3 % for Seraphima and 61.6 % for the Sinyukha variety. In the fourth year of life (the third year of use) of sowed leguminous-cereals agrophytocenoses, the preservation of the legume component was 14.6–15.5 % in clover-cereals grass mixtures with the Sparta variety and 16.0–16.8 % with the Pavlyna variety. In alfalfa grasslands, these indicators were 54.0–55.1 % with Seraphim and 55.0–56.2 % with Sinyukha. Among the studied varieties of clover meadow and alfalfa sowing proved better in the conditions of the Forest Steppe of western Pavlyna and Sinyukha. Cross-sectional and divided cross-sectional sowing of legumes and cereals mixtures proved to be better compared to conventional row crops in terms of conservation of economically valuable grass species. Key words: agrophytocenosis, botanical composition, clover meadow, alfalfa sowing, sowing methods.

NATURAL REPRODUCTION OF ENTOMOPHAGES TO RESTORE BIOCENOTIC REGULATION IN CEREAL CROPS

2018 ◽  
Vol 53 (5) ◽  
pp. 1070-1079
Author(s):  
Zh.A. Shirinyan ◽  
◽  
M.V. Pushnya ◽  
E.Yu. Rodionova ◽  
E.G. Snesareva ◽  
...  
Keyword(s):  
Cereal Crops ◽  
Natural Reproduction

Economic eficiency of cereal crops production by application of PAM

2007 ◽  
Vol 35 (2) ◽  
pp. 693-696
Author(s):  
Krunoslav Zmaic ◽  
Ruzica Loncaric ◽  
Tihana Sudaric
Keyword(s):  
Cereal Crops
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