Identification of blast resistant rice (<i>oryza sativa</i> l.) genotypes in indigenous and exotic germplasm and validation of <i>pi</i> gene linked molecular markers

Thippeswamy, S.; Chandramohan, Y.; Samreen, Zameema; Srinivas, B.; Padmaja, D.; Pravalika, K.

doi:10.5958/0975-928x.2016.00003.x

Cited by 5 publications

(3 citation statements)

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“…This means that this gene may have no effect under the Egyptian conditions or there are any other gene(s) is affecting the expiration of this gene. Similar results were obtained with previous studies [44][45][46][47]. Positive amplified fragments for YL153/YL154 marker that linked to Pita-Pita-2 gene were detected in three Egyptian genotypes (Sakha 105, Sakha 101, and Sakha 104) and IRBLTA-CP1 monogenic line.…”

Section: Phenotypic Traits and Their Segregation In The F 2 Populationsupporting

confidence: 90%

Conventional Breeding and Molecular Markers for Blast Disease Resistance in Rice (Oryza sativa L.)

Rezk¹,

El-Malky²,

El-Beltagi³

et al. 2023

Phyton

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Section: Phenotypic Traits and Their Segregation In The F 2 Populationsupporting

confidence: 90%

Conventional Breeding and Molecular Markers for Blast Disease Resistance in Rice (Oryza sativa L.)

Rezk¹,

El-Malky²,

El-Beltagi³

et al. 2023

Phyton

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“…So far, more than 350 QTLs (associated with blast resistance) and 100 blast resistance (R) genes have been identified for rice blast resistance, and 27 resistance genes vizPib, Pb1, Pita, Pikh,Pish,Pik,Pikp,Pi9,Pi2,Pizt,Pid2,Pi33,Pii,Pi36,Pi37, Evaluation of blast resistance genes Pikm,Pit,Pi5,Pid3,Pia,PiCO39,Pi25,Pi1,pi21,Pi50 and Pi65(t) have been cloned and functionally validated at molecular level (Su et al, 2015;Zheng et al, 2016;zhu et al, 2016). Identifying effective combinations of genes conferring broad spectrum resistance against prevailing pathogen races is very important in blast resistance breeding (Thippeswamy et al, 2016). The present study was aimed at validating resistance reaction of two major genes Pi9 and Pi54 against local isolates of blast pathogen in Tamil Nadu located at southern part of India.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of blast resistance genes Pi9 and Pi54 in rice against local isolates of Tamil Nadu

Thulasinathan

Kambale²,

Ayyenar³

et al. 2020

EJPB

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Rice production system is greatly affected by blast disease caused by Magnaporthe grisea Barr which causes significant yield reduction throughout Asia and different parts of the globe. Developing resistant varieties has been most efficient and economical method for controlling blast disease in rice. Identification of broad spectrum resistance genes against prevailing isolates of the pathogen is a key determining success of developing resistant varieties. However, the blast resistance characterization and evaluation has not been well studied. In the current study, 3 parental lines namely CO 51 (Pi54), 562-4 (a NIL of CO 43 harboring Pi 9) and a susceptible genotype Improved White Ponni (IWP) were evaluated against local isolates of blast pathogen. Presence of Pi9 and Pi54 blast resistance genes in the parental lines was confirmed by using functional markers such as NBS4 and Pi54MAS respectively. All the three genotypes were evaluated against blast disease in a hot spot environment. Both CO51 and 562-4 carrying the Pi54 and Pi9 genes respectively showed moderate resistance against blast disease whereas IWP showed a susceptibility reaction against blast disease. Results indicated that pyramiding of these genes would improve resistance against blast disease. The present study has favored the selection of blast resistant parental lines which can be utilized as donor in breeding programs.

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“…However, the introduction of exotic lines was reported to be an efficient method for development of disease resistant cultivars [ 132 ]. For instance, Thippeswamy et al [ 133 ] reported that the most of exotic rice germplasm taken from the International Rice Research Institute (IRRI) have shown resistance to local South Indian races of blast fungus, indicating high potential of this method in resistance breeding.…”

Section: Breeding Approaches To Control Diseases In Ricementioning

confidence: 99%

Prospects of Understanding the Molecular Biology of Disease Resistance in Rice

Singh

Nag

Arya

et al. 2018

IJMS

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Rice is one of the important crops grown worldwide and is considered as an important crop for global food security. Rice is being affected by various fungal, bacterial and viral diseases resulting in huge yield losses every year. Deployment of resistance genes in various crops is one of the important methods of disease management. However, identification, cloning and characterization of disease resistance genes is a very tedious effort. To increase the life span of resistant cultivars, it is important to understand the molecular basis of plant host–pathogen interaction. With the advancement in rice genetics and genomics, several rice varieties resistant to fungal, bacterial and viral pathogens have been developed. However, resistance response of these varieties break down very frequently because of the emergence of more virulent races of the pathogen in nature. To increase the durability of resistance genes under field conditions, understanding the mechanismof resistance response and its molecular basis should be well understood. Some emerging concepts like interspecies transfer of pattern recognition receptors (PRRs) and transgenerational plant immunitycan be employed to develop sustainable broad spectrum resistant varieties of rice.

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Identification of blast resistant rice (oryza sativa l.) genotypes in indigenous and exotic germplasm and validation of pi gene linked molecular markers

Cited by 5 publications

References 0 publications

Conventional Breeding and Molecular Markers for Blast Disease Resistance in Rice (Oryza sativa L.)

Conventional Breeding and Molecular Markers for Blast Disease Resistance in Rice (Oryza sativa L.)

Evaluation of blast resistance genes Pi9 and Pi54 in rice against local isolates of Tamil Nadu

Prospects of Understanding the Molecular Biology of Disease Resistance in Rice

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