Abstract Aims We evaluated the impact of fungal endophyte symbiosis on growth, ecophysiological and reproductive success wheat exposed to heat drought. Methods Results The resistance pot-grown or drought stress was measured by quantifying efficiency photosystem II (Fv/Fm), plant height, average seed weight (ASW), total (TSW), water-use (WUE) as well time 50% germination percentage second-generation seeds produced under stress, well-watered conditions. endophytic fungi tested increased...

Seed germination is a critical life stage for plants survival and timely seedling establishment especially in stressful environments. We hypothesized that fungal endophytes would improve wheat seed under heat drought stress. The hydrothermal time (HTT) model of conceptual useful predicting the timing energy (EG) given set conditions. HTT EG are applied, first time, to determine if one or more compatible endophytic fungi enhance tolerance wheat. Fungal tested dramatically increased percent...

Abstract Biopesticides have the potential to play an important role in sustainable, environmentally safe pest control. A diverse range of biopesticides employ chemical modes action. This review explores three such biopesticides: a fungus used weed control, beneficial bacteria controlling fungal and bacterial disease virus active against insect pests. Through these case studies, we demonstrate that rely on both biochemical approaches complementary biological modalities. Hence, are more...

A chickpea health issue was first noted in July 2019 southwest Saskatchewan, Canada. Surveys of commercial fields were undertaken 2021, 2022 and 2023 to investigate the potential roles herbicides, fungicides, fertilizer, seed treatments, inoculants, nutrients, nematodes, drought stress, cultivars on severity plant damage. Fields which herbicide containing active ingredient metribuzin had been applied more severe symptoms compared it not. Seed treatment with Apron Advance (active ingredients...

Hubbard, M., Germida, J. and Vujanovic, V. 2014. Fungal endophyte colonization coincides with altered DNA methylation in drought-stressed wheat seedlings. Can. Plant Sci. 94: 223–234. Drought stress is one of the greatest limiting factors to Canadian agricultural production. The endophytic fungus SMCD 2206 improves tolerance for drought. However, mechanism(s) by which this mycobiont interacts its host are not known. Methyl-sensitive amplified polymorphism (MSAP) was used test hypothesis that...

Blackleg disease, caused by Leptosphaeria maculans , is a serious threat to canola production in western Canada. While specific major resistance ( R ) genes can be effective, they also eroded rapidly shift pathogen race composition. Quantitative QR has the potential provide more durable, if less complete, protection. However, effectiveness of may vary widely field. It long been suspected that elevated temperatures limit expression . To test this hypothesis, infection development blackleg was...

Chickpea is an important rotational pulse crop for Saskatchewan field crops. Since 2019, chickpea production has suffered from a plant health issue following rainfall events around flowering to early podding resulting in apical wilting and eventual branch death. Post-emergence broadleaf weed management relies on metribuzin, which can result variable injury chickpea. The study objective was evaluate the effect of metribuzin dose water stress greenhouse. At two weeks after treatment (WAT),...

Aphanomyces euteiches causes root rot in pea, leading to significant yield losses. However, the metabolites involved this pathosystem have not been thoroughly studied. This study aimed fill gap and explore mechanisms of bacterial suppression A. via untargeted metabolomics using pea grown a controlled environment. Chemical isotope labeling (CIL), followed by liquid chromatography-mass spectrometry (LC-MS), was used for metabolite separation detection. Univariate multivariate analyses showed...

Using resistant cultivars is a common approach to managing blackleg of canola/rapeseed caused by Leptosphaeria maculans (Lm). Quantitative resistance (QR), as opposed major-gene resistance, interest because it generally more durable, due its multi-genetic basis. However, the mechanisms and genes underlying QR are mostly unknown. In this study, potential modes action in “74-44 BL” was explored. This Canadian canola cultivar showed moderate but consistent race-nonspecific at cotyledon...

In the Canadian prairies, pulse crops such as field pea (Pisum sativum L.) and lentil (Lens culinaris are economically important widely grown. However, in recent years, root rot, caused by a variety of fungal oomycete pathogens, including Aphanomyces euteiches, has become limiting factor on yield. this study, we examined impacts nitrogen (N) fertilization commercial arbuscular mycorrhizal (AMF) inoculant plant health agronomic production at three locations Saskatchewan: Swift Current, Indian...

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Ascochyta blight, caused by rabiei, is a serious constraint to chickpea production, managed primarily via foliar fungicides and genetic resistance. Imidazolinone (IMI) herbicides, used for in-crop weed management, can injure susceptible cultivars so increase ascochyta risk. The impact of IMI application on tolerant was assessed in combination with blight management options (starting fungicide prior symptom development, two versus four applications, resistance) small plot trials Saskatchewan...

Microorganisms living in soil and rhizosphere or inside plants can promote plant growth health. Genomic characterization of beneficial microbes could shed light on their special features. Through extensive field survey across Saskatchewan, Canada, followed by vitro greenhouse characterization, we identified several bacterial isolates antagonistic to pea root rot pathogen Aphanomyces euteiches. In this study, the genomes three isolates— Pseudomonas sp. rhizo 66 (PD-S66), synxantha 25...

Abstract Aphanomyces euteiches causes root rot in pea, leading to significant yield losses. However, the metabolites involved this pathosystem have not been thoroughly studied. This study aimed fill gap and explore mechanisms of bacterial suppression A. via untargeted metabolomics using pea grown a controlled environment. Chemical isotope labeling (CIL), followed by liquid chromatography-mass spectrometry (LC-MS), was used for metabolite separation detection. Univariate multivariate analyses...