Defense Mechanisms of Alfalfa Against Cyclic Tetramethylene Tetranitramine (Hmx) Stress DOI

Xu Yang

Опубликована: Янв. 1, 2023

Much attention has been paid to the environmental toxicity and ecological risk caused by cyclic tetramethylene tetranitramine (HMX) pollution in military activity sites. In this study, response mechanism of alfalfa plants HMX was analyzed from aspects photosynthetic system, micromorphology, antioxidant enzyme mineral metabolism, secondary metabolism. Exposure 5 mg·L-1 resulted a significant increase leaf N content drift Fourier transform infrared protein peak area. Transmission electron microscopy images revealed damage root system subcellular morphology, but plant leaves effectively resisted pressure, parameters essentially maintained steady-state levels. The proline decreased significantly 23.1–47.2%, reactive oxygen species increased 1.66–1.80 fold. roots regulate transport/absorption many elements that impart stress resistance, Cu, Mn, Na uptake is associated with metabolism upregulated general exposure, main differences appearing lipids lipid-like molecules, further confirming biofilm structure. causes an imbalance energy supply oxidative phosphorylation generates important biomarkers form pyrophosphate dihydrogen phosphate. Interestingly, had no effect on basic metabolic networks (i.e., glycolysis/gluconeogenesis tricarboxylic acid cycle), good resistance. Alfalfa apparently multiple network systems resist/overcome toxicity. These findings provide scientific basis for improving tolerance understanding mechanism.

Язык: Английский

Transcriptome analysis of alfalfa (Medicago sativa L.) roots reveals overwintering changes in different varieties DOI Creative Commons

Yajun Ma,

Guozhu Yang,

Ruijun Duan

и другие.

Czech Journal of Genetics and Plant Breeding, Год журнала: 2024, Номер 60(2), С. 97 - 104

Опубликована: Март 15, 2024

Low temperatures are one of the major abiotic stresses that affect alfalfa's development and yield. Enhancing frost resistance through resistance-related genes is most effective ways to address this issue in alfalfa. Therefore, exploring cold-resistant gene resources cultivation alfalfa cultivars inevitable order achieve high yield quality. In study, we conducted transcriptome profiling roots obtained from two genotypes, i.e., Qingda No.1 for freeze tolerance Gannong No.9 sensitivity. We observed had more lateral a developed root system after overwintering, while fewer an underdeveloped system. After exhibited higher superoxide dismutase (SOD) activity compared No.9, showed perosuperoxide dismutasexidase (POD) than No.1. identified 25,935 differentially expressed genes, with 12 979 956 differential found freeze-tolerant variety group freeze-sensitive group, respectively. The enrichment Kyoto Encyclopedia Genes Genomes (KEGG) pathways also differed between groups. discovered several family members, frequent transcription factors were bHLH, B3, NAC, WRKY, MYB_related. These findings provide comprehensive information further understand molecular mechanisms adaptation freezing stress offer potential functional candidate stress.

Язык: Английский

Процитировано

1
Defense mechanisms of alfalfa against cyclic tetramethylene tetranitramine (HMX) stress DOI
Xu Yang, Sanping Zhao, Hai-ling Xi

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 898, С. 165585 - 165585

Опубликована: Июль 17, 2023

Язык: Английский

Процитировано

3
Transformation of vegetation under the conditions of the impact of military actions on the natural environment in Ukraine: A review DOI Open Access
V. S. Fedenko

Ecology and Noospherology, Год журнала: 2023, Номер 34(2), С. 101 - 107

Опубликована: Дек. 26, 2023

The negative consequences of various types military activity on physical disturbances and chemical pollution the environment are systematized. Factors include potentially toxic elements, energetic compounds (explosives, fuels) warfare agents. According to systematization available data long-term impact exercises actions territories different countries soil pollution, metal dominate among organic pollutants compounds. combination violations with multicomponent creates a specificity natural compared other anthropogenic factors. following directions research into problem were noted: detection, distribution ecotoxicology in environments, biodiversity vegetation dynamics, phytoremediation reduce level ecological physiological factors plant tolerance, degradation detoxification plants. tolerance plants residues explosive substances classes occurs due general pathways biochemical transformation, which ensure xenobiotics. Taking account current state problem, literary Ukraine transformation summarized. Among these areas, assessment damage caused by armed aggression environment; environmental monitoring combat action; analysis vegetation. Destructions as result action led significant changes vegetation, associated ruderalization adventization. role ruderal (including invasive) common flora under conditions habitats is analyzed. Increased invasive species high levels metals can be used for disturbed but will create competitive advantage more intensive spread native new risks phytodiversity.

Язык: Английский

Процитировано

1
Defense Mechanisms of Alfalfa Against Cyclic Tetramethylene Tetranitramine (Hmx) Stress DOI

Xu Yang

Опубликована: Янв. 1, 2023

Much attention has been paid to the environmental toxicity and ecological risk caused by cyclic tetramethylene tetranitramine (HMX) pollution in military activity sites. In this study, response mechanism of alfalfa plants HMX was analyzed from aspects photosynthetic system, micromorphology, antioxidant enzyme mineral metabolism, secondary metabolism. Exposure 5 mg·L-1 resulted a significant increase leaf N content drift Fourier transform infrared protein peak area. Transmission electron microscopy images revealed damage root system subcellular morphology, but plant leaves effectively resisted pressure, parameters essentially maintained steady-state levels. The proline decreased significantly 23.1–47.2%, reactive oxygen species increased 1.66–1.80 fold. roots regulate transport/absorption many elements that impart stress resistance, Cu, Mn, Na uptake is associated with metabolism upregulated general exposure, main differences appearing lipids lipid-like molecules, further confirming biofilm structure. causes an imbalance energy supply oxidative phosphorylation generates important biomarkers form pyrophosphate dihydrogen phosphate. Interestingly, had no effect on basic metabolic networks (i.e., glycolysis/gluconeogenesis tricarboxylic acid cycle), good resistance. Alfalfa apparently multiple network systems resist/overcome toxicity. These findings provide scientific basis for improving tolerance understanding mechanism.

Язык: Английский

Процитировано

0