Spatial analysis of factors influencing bacterial leaf blight in rice production

Ahmad, Toqeer; Haider, Muhammad Samee; Randhir, T O; Randhir, Reena; Ahmad, Sajid Rashid

doi:10.1590/1519-6984.264249

Cited by 3 publications

(3 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Location of the sample is believed to reflect valuable information due to the apparent spatial correlation quantifiable in terms of separation distance and direction. Samples taken close together are expected to be more alike than samples far apart [9,10] The spatio-temporal distribution of grain discoloration incidence in Kharif 2012 and 2013 varied with districts, the highest was in Bellary district (33.82% and 31.24%) and lowest was in Chikamagalur district (17.54% and 19.53%) which comes under Hilly area which comes under irrigated maidan area of North-Karnataka. Mathew Baite et al [11] reported the grain discolouration of rice in Cuttak , where the overall incidence of the disease ranged from 25 to 92%.…”

Section: Discussionmentioning

confidence: 99%

Survey and Surveillance on Major Rice Diseases Severity in Karnataka, India

Shivakumar,

Patil

2023

IJECC

View full text Add to dashboard Cite

Rice blast, sheath blight and Grain discoloration diseases of rice were becoming a serious threat to rice crop in Karnataka. The patterns of spatio-temporal distribution of disease incidence were examined in two seasons (Kharif 2012 and 2013) with main objective of statues of rice diseases in paddy growing areas of Karnataka and variability with climatic condition. Most of the fields in the paddy growing areas of Karnataka were diseased, but significant differences in disease incidence occurred among the some sites in paddy growing areas of Karnataka. The leaf blast severity showed that the highest mean per cent disease incidence 37.20 was observed in Mandya district.and sheath blight severity showed that the highest mean per cent disease incidence 41.76 was observed in Yadgir district. The spatio-temporal distribution of grain discoloration incidence in Kharif 2012 and 2013 varied with districts, the maximum disease was in Bellary (33.82% and 31.24%) followed by Koppal (31.78% and 27.16%), for sheath blight, maximum disease was in Yadgir (36.23% and 41.76%) followed by Raichur (27.16% and 30.59%) and maximum leaf blast disease was in Mandya (37.20% and 36.91%) followed by Ramanagar (36.67% and 36.54%) respectively. Many fungi have been isolated from discolored grain, Curvularia lunata (Wakker) Boed. were found as a dominant pathogen. Survey and surveillance were serve as a precursor for evolving management strategies against the disease effective for the zone in an integrated way for sustainable development of crop in the state.

show abstract

Section: Discussionmentioning

confidence: 99%

Survey and Surveillance on Major Rice Diseases Severity in Karnataka, India

Shivakumar,

Patil

2023

IJECC

View full text Add to dashboard Cite

show abstract

“…Bacterial infections can result in crop bacterial diseases. Common diseases include leaf blight, canker, bacterial wilt and soft rot 1–6 . The associated pathogenic bacteria not only extract nutrients and water from the host crops, but also disrupt the normal physiological activities of the host, leading to various agricultural diseases 7 .…”

Section: Introductionmentioning

confidence: 99%

Bioinspired total synthesis and biological activity of Pegaharine A

Liu,

Zuo,

Song

et al. 2023

Pest Management Science

View full text Add to dashboard Cite

BACKGROUNDPhytopathogens cause various diseases by parasitizing crops, reducing crop yield and resulting in substantial economic losses in agricultural production. A novel type isolated from the perennial herbaceous Peganum harmala L. seeds, β‐carboline alkaloids pegaharine A (PA), has become a hot topic in developing plant‐originated green pesticides owing to their significant physiological activities.RESULTSA scalable bioinspired total synthesis of PA is accomplished in the present work. The systematical biological assay study showed that PA exhibited moderate inhibitory activity against nine tested plant pathogenic fungi and showed significant inhibitory activity in vitro against the three tested plant pathogenic bacteria. Most noteworthy is the inhibitory rates of PA on Xanthomonas oryzae pv. oryzae (Xoo), X. oryzae pv. oryzicola (Xoc) and X. axonopodis pv. citri (Xac) of 93.6%, 92.1% and 86.1%, respectively, which are better than the control drug, bismerthiazol (63.4%, 61.2% and 53.7% at 100 μg mL−1 concentration). Furthermore, the EC50 value of PA against Xoo, Xoc and Xac was 52.2, 60.0 and 65.1 μg mL−1, respectively, superior to 72.9, 64.2 and 70.1 μg mL−1 of the control drug. Moreover, the anti‐Xoo mechanistic studies revealed that PA exerted its antibacterial effects by increasing the permeability of the bacterial membrane, reducing the extracellular polysaccharide content and inducing morphological changes in bacterial cells.CONCLUSIONA novel β‐carboline alkaloid, PA, was prepared by biomimetic total synthesis. Its significant antibacterial activity was closely related to the permeation of bacterial cell membranes, which was confirmed by anti‐Xoo mechanistic studies. More importantly, the structure could be regarded as a model for developing novel bactericides. © 2023 Society of Chemical Industry.

show abstract

“…In addition to grain yield, improving grain quality is also important for rice breeders (Cordero-Lara, 2020;Tong et al, 2019;Custodio et al, 2019;Nair, 2019;Kamrul et al, 2020). The main areas of rice sowing in the world are used for growing white-grained varieties (Ahmad et al, 2023;Javed et al, 2022). Wild-growing ancestors of cultivated rice had a colored grain pericarp.…”

Section: Introductionmentioning

confidence: 99%

Heritability and amylose content in hybrid lines of late-generation rice with colored pericarp

Baiseitova,

Berkimbay,

Mynbayeva

et al. 2023

Braz. J. Biol.

View full text Add to dashboard Cite

Improving grain quality in rice breeding is one of the main tasks. This concerns the creation of rice varieties with colored pericarp uncommon in the Republic of Kazakhstan, and the assessment of its quality is an important stage of breeding. Rice with colored pericarp is an important dietary crop, more useful for the human body than white rice. Regardless of the type of rice, the amount of amylose in rice grain is a crucial indicator that determines the quality of rice. The paper presents the results of electrophoretic separation of spare grain proteins of rice hybrids and dihaploids with colored pericarp and their parent forms obtained as a result of the hybridization of varieties with colored pericarp (Black Rice (China), Mavr (Russia), and Yir 5815 (Ukraine)) with white rice varieties zoned in Kazakhstan. The hybridization of the rice varieties with colored pericarp with white rice varieties was carried out to obtain rice varieties with colored pericarp oriented to the soil and climate of Kazakhstan. Analyzing the results of electrophoresis and the amount of amylose, it was found that hybrid lines differed in amylose content. One of the studied hybrids was high in amylose, four had a medium amylose content, ten had a low amylose content, three had a very low amylose content, and six were glutinous. According to the results of electrophoretic separation of spare rice grain proteins, the spectrum of the enzyme determining amylose was detected in five hybrids, which corresponds to the results of spectrophotometric determination of amylose: high amylose in one hybrid and medium amylose content in four. The results show that the hybrids obtained as a result of hybridization are true hybrids and as a result of long-term selection, the amylose content in the F7-F8 hybrids stabilized. The hybrids can be used in further breeding of rice with colored pericarp.

show abstract

Spatial analysis of factors influencing bacterial leaf blight in rice production

Cited by 3 publications

References 48 publications

Survey and Surveillance on Major Rice Diseases Severity in Karnataka, India

Survey and Surveillance on Major Rice Diseases Severity in Karnataka, India

Bioinspired total synthesis and biological activity of Pegaharine A

Heritability and amylose content in hybrid lines of late-generation rice with colored pericarp

Contact Info

Product

Resources

About