scholarly journals Correction: Effects of UV-B radiation on the infectivity of Magnaporthe oryzae and rice disease-resistant physiology in Yuanyang terraces

2018 ◽  
Vol 17 (3) ◽  
pp. 364-364
Author(s):  
Xiang Li ◽  
Yongmei He ◽  
Chunmei Xie ◽  
Yanqun Zu ◽  
Fangdong Zhan ◽  
...  
Keyword(s):  
Magnaporthe Oryzae ◽  
Disease Resistant ◽  
Rice Disease

Correction for ‘Effects of UV-B radiation on the infectivity of Magnaporthe oryzae and rice disease-resistant physiology in Yuanyang terraces’ by Xiang Li et al., Photochem. Photobiol. Sci., 2018, 17, 8–17.

scholarly journals Effects of UV-B radiation on the infectivity of Magnaporthe oryzae and rice disease-resistant physiology in Yuanyang terraces

2018 ◽  
Vol 17 (1) ◽  
pp. 8-17 ◽  
Author(s):  
Xiang Li ◽  
Yongmei He ◽  
Chunmei Xie ◽  
Yanqun Zu ◽  
Fangdong Zhan ◽  
...  
Keyword(s):  
Magnaporthe Oryzae ◽  
Rice Field ◽  
Rice Variety ◽  
Field Conditions ◽  
Disease Resistant ◽  
Rice Disease ◽  
Field Ecosystem ◽  
Traditional Rice

The traditional rice variety “Baijiaolaojing” was planted in Yuanyang terraces a stable and sustainable rice field ecosystem under field conditions.

scholarly journals Identification and characterization of genes frequently responsive to Xanthomonas oryzae pv. oryzae and Magnaporthe oryzae infections in rice

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Weiwen Kong ◽  
Li Ding ◽  
Xue Xia
Keyword(s):  
Disease Resistance ◽  
Magnaporthe Oryzae ◽  
Enrichment Analysis ◽  
Defense Responses ◽  
Resistance Mechanisms ◽  
Xanthomonas Oryzae ◽  
Transcriptional Reprogramming ◽  
Go Enrichment ◽  
Phenylpropanoid Biosynthesis ◽  
Rice Disease

Abstract Background Disease resistance is an important factor that impacts rice production. However, the mechanisms underlying rice disease resistance remain to be elucidated. Results Here, we show that a robust set of genes has been defined in rice response to the infections of Xanthomonas oryzae pv. oryzae (Xoo) and Magnaporthe oryzae (Mor). We conducted a comprehensive analysis of the available microarray data from a variety of rice samples with inoculation of Xoo and Mor. A set of 12,932 genes was identified to be regulated by Xoo and another set of 2709 Mor-regulated genes was determined. GO enrichment analysis of the regulated genes by Xoo or Mor suggested mitochondrion may be an arena for the up-regulated genes and chloroplast be another for the down-regulated genes by Xoo or Mor. Cytokinin-related processes were most frequently repressed by Xoo, while processes relevant to jasmonic acid and abscisic acid were most frequently activated by Xoo and Mor. Among genes responsive to Xoo and Mor, defense responses and diverse signaling pathways were the most frequently enriched resistance mechanisms. InterPro annotation showed the zinc finger domain family, WRKY proteins, and Myb domain proteins were the most significant transcription factors regulated by Xoo and Mor. KEGG analysis demonstrated pathways including ‘phenylpropanoid biosynthesis’, ‘biosynthesis of antibiotics’, ‘phenylalanine metabolism’, and ‘biosynthesis of secondary metabolites’ were most frequently triggered by Xoo and Mor, whereas ‘circadian rhythm-plant’ was the most frequent pathway repressed by Xoo and Mor. Conclusions The genes identified here represent a robust set of genes responsive to the infections of Xoo and Mor, which provides an overview of transcriptional reprogramming during rice defense against Xoo and Mor infections. Our study would be helpful in understanding the mechanisms of rice disease resistance.

Making Rice Disease-Resistant

1997 ◽  
Vol 277 (5) ◽  
pp. 100-105 ◽  
Author(s):  
Pamela C. Ronald
Keyword(s):  
Disease Resistant ◽  
Rice Disease

scholarly journals Genome-wide identification and expression analysis of rice NLR genes responsive to the infections of Xanthomonas oryzae pv. oryzae and Magnaporthe oryzae

2019 ◽  
Author(s):  
Li Ding ◽  
Xiameng Xu ◽  
Weiwen Kong ◽  
Xue Xia ◽  
Shengwei Zhang ◽  
...  
Keyword(s):  
Magnaporthe Oryzae ◽  
Critical Role ◽  
Regulatory Elements ◽  
Xanthomonas Oryzae ◽  
Differentially Expressed ◽  
Rna Seq ◽  
Promoter Regions ◽  
Medium Level ◽  
Rice Disease ◽  
The Veil

Abstract Background Nucleotide-binding site, leucine-rich repeat (NLR) genes play a critical role in rice disease resistance. However, the transcriptional activities of rice NLR genes during pathogen invasions are still unclear.Results To uncover the veil, we identified a total of 430 regular rice NLR genes with both NBS and LRR domains, consisting of 192 CNL and 238 XNL (without a CC motif) members. We performed individual and integrative analyses based on 69 samples from rice microarray after the infections of Xanthomonas oryzae pv. oryzae (Xoo) and Magnaporthe oryzae (Mor). 397 NLR genes were found to be expressed at low/medium level, while 10 NLR genes were observed to show high levels of expression. 400 NLR genes were discovered to be differentially expressed in at least one sample. Further, 46 NLR genes were identified to be differentially expressed in rice response to the two pathogens and 38 of them could be validated by RNA-seq data. Six cis-regulatory elements (MYC, STRE, MYB, ABRE, G-box, and AS-1) were observed to occur frequently in the promoter regions of rice NLR genes. Ten NLR genes were selected for in lab analysis, and qRT-PCR results of seven NLR genes verified the validity of the microarray and RNA-Seq data.Conclusions Our results would shed new light on revealing the roles of NLR genes in rice resistance to Xoo and Mor.

Crystal structures of Magnaporthe oryzae trehalose-6-phosphate synthase (MoTps1) suggest a model for catalytic process of Tps1

2019 ◽  
Vol 476 (21) ◽  
pp. 3227-3240 ◽  
Author(s):  
Shanshan Wang ◽  
Yanxiang Zhao ◽  
Long Yi ◽  
Minghe Shen ◽  
Chao Wang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Conformational Changes ◽  
Magnaporthe Oryzae ◽  
Structural Information ◽  
Complex Structure ◽  
Critical Role ◽  
Catalytic Process ◽  
Structural Basis ◽  
Salt Bridges ◽  
Terminal Domain

Trehalose-6-phosphate (T6P) synthase (Tps1) catalyzes the formation of T6P from UDP-glucose (UDPG) (or GDPG, etc.) and glucose-6-phosphate (G6P), and structural basis of this process has not been well studied. MoTps1 (Magnaporthe oryzae Tps1) plays a critical role in carbon and nitrogen metabolism, but its structural information is unknown. Here we present the crystal structures of MoTps1 apo, binary (with UDPG) and ternary (with UDPG/G6P or UDP/T6P) complexes. MoTps1 consists of two modified Rossmann-fold domains and a catalytic center in-between. Unlike Escherichia coli OtsA (EcOtsA, the Tps1 of E. coli), MoTps1 exists as a mixture of monomer, dimer, and oligomer in solution. Inter-chain salt bridges, which are not fully conserved in EcOtsA, play primary roles in MoTps1 oligomerization. Binding of UDPG by MoTps1 C-terminal domain modifies the substrate pocket of MoTps1. In the MoTps1 ternary complex structure, UDP and T6P, the products of UDPG and G6P, are detected, and substantial conformational rearrangements of N-terminal domain, including structural reshuffling (β3–β4 loop to α0 helix) and movement of a ‘shift region' towards the catalytic centre, are observed. These conformational changes render MoTps1 to a ‘closed' state compared with its ‘open' state in apo or UDPG complex structures. By solving the EcOtsA apo structure, we confirmed that similar ligand binding induced conformational changes also exist in EcOtsA, although no structural reshuffling involved. Based on our research and previous studies, we present a model for the catalytic process of Tps1. Our research provides novel information on MoTps1, Tps1 family, and structure-based antifungal drug design.

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