Chlorophyll fluorescence in the leaves of wheat seedlings under the combined effect of chloride salinity and infection with Bipolaris sorokiniana DOI Open Access
Т. А. Гурова,

N. E. Chesnochenko

Siberian Herald of Agricultural Science, Journal Year: 2024, Volume and Issue: 54(8), P. 14 - 25

Published: Sept. 23, 2024

The results of the studies photosynthetic activity seedlings spring soft wheat three varieties and their adaptive responses to combined effect infection with pathogen common root rot cereals Bipolaris sorokiniana Shoem. ( B. ) chloride salinization on parameters chlorophyll fluorescence (ChlF) are presented. were grown from pathogen-infected 3-day-old germinated seeds sodium solution (experiment) tap water (control) under specified climatic conditions. ChlF was recorded in 10, 12, 14, 16-day-old using a Dual-PAM-100/F fluorimeter Slow Kinetics mode. carried out 2022, 2023. informativeness Y (II), ETR, qP, Y(NPQ), qN Y(NO) as biomarkers assessment resistance effects salinity confirmed. F v /F 0 m turned be less sensitive. maximum significant intervarietal differences (from 1.8 4.3 times) detected six ChlF. smallest changes relative control found more resistant variety Sibirskaya 21 compared Novosibirskaya 41 29. Severe stress condition 16th day cultivation 29 resulted synchronous increase parameter unregulated non-photochemical quenching NO by 45.8 59.9% decrease regulated photochemical NPQ 44.5 58.9%, respectively. This indicates efficiency protective regulatory mechanisms during photosynthesis, which can serve diagnostic indicator assessing tolerance varieties. It is concluded that it possible use assess activity, identify components phenotyping for action salinity.

Language: Английский

The lowdown on breakdown: Open questions in plant proteolysis DOI Creative Commons
Nancy A. Eckardt, Tamar Avin‐Wittenberg, Diane C. Bassham

et al.

The Plant Cell, Journal Year: 2024, Volume and Issue: 36(9), P. 2931 - 2975

Published: July 9, 2024

Abstract Proteolysis, including post-translational proteolytic processing as well protein degradation and amino acid recycling, is an essential component of the growth development living organisms. In this article, experts in plant proteolysis pose discuss compelling open questions their areas research. Topics covered include role cell cycle, DNA damage response, mitochondrial function, generation N-terminal signals (degrons) that mark many proteins for (N-terminal acetylation, Arg/N-degron pathway, chloroplast N-degron pathway), developmental metabolic signaling (photomorphogenesis, abscisic strigolactone signaling, sugar metabolism, postharvest regulation), responses to environmental (endoplasmic-reticulum-associated degradation, chloroplast-associated drought tolerance, growth-defense trade-off), functional diversification peptidases. We hope these thought-provoking discussions help stimulate further

Language: Английский

Citations

6
Cold exposure transiently increases resistance of Arabidopsis thaliana against the fungal pathogen Botrytis cinerea DOI Creative Commons

Dominic Schütte,

Abdulmalek Remmo,

Margarete Baier

et al.

Physiological and Molecular Plant Pathology, Journal Year: 2025, Volume and Issue: unknown, P. 102579 - 102579

Published: Jan. 1, 2025

Language: Английский

Citations

0
Impact of Nutrient Stress on Plant Disease Resistance DOI Open Access
Héctor Martín‐Cardoso, Blanca San Segundo

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1780 - 1780

Published: Feb. 19, 2025

Plants are constantly exposed to abiotic and biotic stresses that seriously affect crop yield quality. A coordinated regulation of plant responses combined abiotic/biotic requires crosstalk between signaling pathways initiated by each stressor. Interconnected further finetune stress allow the respond such effectively. The nutritional status might influence disease resistance strengthening or weakening immune responses, as well through modulation pathogenicity program in pathogen. Here, we discuss advances our understanding interactions nutrient stress, deficiency excess, context current agricultural practices. introduction chemical fertilizers pesticides was a major component Green Revolution 1960s greatly boosted production. However, massive application agrochemicals also has adverse consequences on environment animal/human health. Therefore, an in-depth connections caused overfertilization (or low bioavailability nutrients) is timely novel field research with important implications for control species. Optimizing management practices tailored specific environmental conditions will be crucial maximizing production using environmentally friendly systems.

Language: Английский

Citations

0
Metabolomic Profiling of Pogostemon cablin Reveals Disruption of Secondary Metabolite Biosynthesis Induced by Corynespora cassiicola Infection DOI Open Access
Renqiang Liao, Yangyang Chen, Limin Li

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(8), P. 3680 - 3680

Published: April 13, 2025

Pogostemon cablin (patchouli) is an economically important aromatic plant widely used in the fragrance and pharmaceutical industries. This study investigates effects of Corynespora leaf spot disease (CLSD) on metabolic profiles patchouli alcohol content leaves. Utilizing gas chromatography-mass spectrometry (GC-MS), real-time PCR (qPCR), comprehensive non-targeted metabolomic analyses (HS-SPME-GC-MS LC-MS/MS), we compared diseased (LD-TJ) healthy (CK) Results revealed a significant 51% reduction CLSD-infected leaves, which was correlated with 94% decrease expression patchoulol synthase (PTS)-encoding gene (p < 0.01) 79% farnesyl pyrophosphate (FPPS)-encoding 0.05), both critical for terpenoid biosynthesis. Metabolomic identified extensive disruptions volatile non-volatile compounds, majority differential abundance metabolites (DAMs) being downregulated. Key pathways, including beta-alanine metabolism nicotinate/nicotinamide metabolism, were notably affected, indicating broader instability. Additionally, crucial transcription factors involved biosynthesis significantly downregulated, potential mechanism by C. cassiicola may compromise quality through modulation host processes. These findings underscore urgent need to develop disease-resistant P. cultivars genetic engineering enhance sustainability productivity this valuable industrial crop.

Language: Английский

Citations

0
Antioxidants by nature: an ancient feature at the heart of flavonoids' multifunctionality DOI Creative Commons
Giovanni Agati, Cecilia Brunetti, Luana Beatriz dos Santos Nascimento

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Language: Английский

Citations

3
Mitochondrial oxidative phosphorylation (mtOXPHOS) serves as a sentinel to gauge fluctuations under heat stress in Arabidopsis thaliana elucidated by comparative transcriptomics DOI Creative Commons
Muhammad Riaz,

Erum Yasmeen,

Moyang Liu

et al.

Plant Stress, Journal Year: 2024, Volume and Issue: unknown, P. 100613 - 100613

Published: Sept. 1, 2024

Language: Английский

Citations

2
Cold exposure transiently increases resistance of Arabidopsis thaliana against the fungal pathogen Botrytis cinerea DOI Creative Commons

Dominic Schütte,

Abdulmalek Remmo,

Margarete Baier

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 31, 2024

ABSTRACT A sudden cold exposure (4°C, 24 h) primes resistance of Arabidopsis thaliana against the virulent biotrophic pathogen Pseudomonas syringae pv. tomato DC3000 ( Pst ) for several days. This effect is mediated by chloroplast sensing and activity stromal thylakoid-bound ascorbate peroxidases (sAPX/tAPX). In this study, we investigated impact such on plant defence necrotrophic fungus Botrytis cinerea . Plant was transiently enhanced if B. infection occurred immediately after exposure, but cold-enhanced absent when treatment were separated 5 days at normal growth conditions. Plastid partially contributed to transient fungus. response , levels reactive oxygen species (ROS) significantly higher in cold-pretreated leaves. Pathogen-triggered ROS varied absence sAPX, highlighting strong capacity sAPX-dependent regulation stroma. The associated with cold-induced cell wall modifications, including callose formation significant lignification cold-treated Funding work supported German Research Foundation (CRC973/C4) FU Berlin.

Language: Английский

Citations

0
Acclimation to high daily thermal amplitude converts a defense response regulator into susceptibility factor DOI Creative Commons
Marie Didelon, Justine Sucher,

Pedro Carvalho-Silva

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 22, 2024

ABSTRACT Acclimation enables plants to adapt immediate environmental fluctuations, supporting biodiversity and ecosystem services. However, global changes are altering conditions for plant disease outbreaks, increasing the risk of infections by pathogenic fungi oomycetes, often undermining immune responses. Understanding molecular basis acclimation is crucial predicting climate change impacts on ecosystems improving crop resilience. Here, we investigated how Arabidopsis thaliana quantitative responses acclimates daily temperature fluctuations. We analyzed fungal pathogen Sclerotinia sclerotiorum following three regimes that reflect distribution areas both species. Mediterranean acclimation, characterized broad diurnal amplitudes, resulted in a loss resistance natural A. accessions. Global gene expression analyses revealed altered nearly half pathogen-responsive genes, many which were down-regulated inoculation associated with susceptibility. Phenotypic analysis mutants identified novel components temperate acclimation. Several these however more resistant than wild type Notably, mutant lines NAC42-like transcription factor did not show under This was linked an acclimation-mediated switch repertoire targets differentially regulated inoculation. These findings reveal rewiring regulatory networks suggest new strategies maintain function warming climate.

Language: Английский

Citations

0
Chlorophyll fluorescence in the leaves of wheat seedlings under the combined effect of chloride salinity and infection with Bipolaris sorokiniana DOI Open Access
Т. А. Гурова,

N. E. Chesnochenko

Siberian Herald of Agricultural Science, Journal Year: 2024, Volume and Issue: 54(8), P. 14 - 25

Published: Sept. 23, 2024

The results of the studies photosynthetic activity seedlings spring soft wheat three varieties and their adaptive responses to combined effect infection with pathogen common root rot cereals Bipolaris sorokiniana Shoem. ( B. ) chloride salinization on parameters chlorophyll fluorescence (ChlF) are presented. were grown from pathogen-infected 3-day-old germinated seeds sodium solution (experiment) tap water (control) under specified climatic conditions. ChlF was recorded in 10, 12, 14, 16-day-old using a Dual-PAM-100/F fluorimeter Slow Kinetics mode. carried out 2022, 2023. informativeness Y (II), ETR, qP, Y(NPQ), qN Y(NO) as biomarkers assessment resistance effects salinity confirmed. F v /F 0 m turned be less sensitive. maximum significant intervarietal differences (from 1.8 4.3 times) detected six ChlF. smallest changes relative control found more resistant variety Sibirskaya 21 compared Novosibirskaya 41 29. Severe stress condition 16th day cultivation 29 resulted synchronous increase parameter unregulated non-photochemical quenching NO by 45.8 59.9% decrease regulated photochemical NPQ 44.5 58.9%, respectively. This indicates efficiency protective regulatory mechanisms during photosynthesis, which can serve diagnostic indicator assessing tolerance varieties. It is concluded that it possible use assess activity, identify components phenotyping for action salinity.

Language: Английский

Citations

0