Endogenous melatonin (MEL) and abscisic acid (ABA) are involved in the adaptation of plants to environmental stresses. The application exogenous serotonin (SER) can enhance their tolerance abiotic stress, such as cold. However, mechanism associated with serotonin-mediated defense against cold-induced damage mangroves is still poorly understood. In this study, we demonstrated that mangrove (Kandelia obovata) seedlings sprayed 200 μmol·L-1 exhibited enhanced cold tolerance, shown by reduced...

Plant growth promoting fungi are receiving increased attention as valuable beneficial microorganisms in crop cultivation due to their capacity produce bioactive substances, promote plant and enhance immune defense functions. In this study, a novel Trichoderma isolate, designated TM2-4, was screened from healthy tomato rhizosphere soil identified afroharzianum. Culture filtrate of the isolate TM2-4 displayed obvious substance production an evident effect seed germination, with hypocotyl...

Caligidae, commonly known as sea lice, is the most speciose family of symbiotic copepods comprising over 490 species classified in 31 genera. Caligus Müller, 1785 largest genus this 255 species. Fifty-three have been reported from Taiwan so far, representing 20.78 % currently world. Nevertheless, we believe many more are yet to be discovered waters Taiwan, because only 17.71 (553/3,121 species) potential fish hosts occurring Taiwanese examined for parasitic far. Among countries Far East,...

Streptomyces lydicus strain A01, which can produce natamycin and chitinase, has a significant inhibition effect on gray mold disease caused by Botrytis cinerea. However, it no detectable glucanase activity. Strain A21 isolated from the snow covered high altitude area in Tibet, China, also antagonistic activity against B. It displayed an obvious halo lichen polysaccharides plates congo red staining, indicating strong was identified as Paenibacillus polymyxa using 16S rDNA gene analysis...

Abstract In northern China, the transition zone affected by summer monsoon and its neighboring areas frequently experience drought events. Especially since 21st century, number of major events in this region has significantly increased, making it a notable drought-prone area known as belt (NDPB). Till now, have profoundly impacted China’s historical progress socioeconomic development. fact, similar belts are common other zones globally, highly relevant scientifically valuable to study issues...

ABSTRACT Northern China's complex climatic transitions between arid, monsoon and transitional zones create spatially divergent convective regimes with cascading impacts on extreme weather. Using 25 years (1996–2020) of multi‐satellite observations, this study reveals that activities (CA) deep (DCA) exhibit pronounced spatiotemporal heterogeneity governed by topography‐circulation interactions. The eastern Tibetan Plateau slopes Northeast China plains emerge as persistent hotspots, sustaining...

Accurately obtaining the spatial distribution of soil moisture and its variability are basis for land-atmosphere interaction study. We investigated fidelity four satellite-based products (AMSR2, CCI, SMAP, SMOS) using in situ observation during period 2019–2020. The different northern China were analyzed seasons climate zones. satellite showed best performance summer with bias uncertainty three (CCI, being less than 0.041 0.097, whereas a large winter. For all seasons, AMSR2 CCI demonstrated...

Chemical investigation of the fungal strain Gymnoascus reessii za-130, which was previously isolated from rhizosphere tomato plants infected by root-knot nematode Meloidogyne incognita, led to isolation and identification a new indoloditerpenoid metabolite designated gymnoascole acetate. Its structure established spectroscopic methods including 1D- 2D-NMR MS analyses. Gymnoascole acetate demonstrated strong adverse effects on M. incognita second-stage juvenile (J2) viability; exposure 36...

Due to the complex terrain, sparse precipitation observation sites, and uneven distribution of in northeastern slope Qinghai–Tibet Plateau, it is necessary establish a estimation method with strong applicability. In this study, data from meteorological stations northeast Plateau 11 geographical topographic factors related were used analyze main affecting distribution. Based on above, multivariate linear regression model was established. The results revealed that negatively latitude...

Mangroves that grow at the latitudinal extremes of their distribution are susceptible to extreme cold events. Successive enhancement low temperature stress (seLTS) is a typical characteristic Low can inhibit mangrove photosynthesis, which often inhibits growth and development mangroves. However, possible reasons for impairment photosynthesis mangroves due events remain unclear. Kandelia obovata seedlings in chamber were exposed 5°C/−2°C (day/night) 36 h (−2°C 16 h) with 12 light per day 600...

Understanding how mangroves respond to rare cold events has implications for both restoration and conservation under climate change scenarios. This study investigated the responses of photosynthesis activities key enzymes involving carbon nitrogen metabolism at different ages Kandelia obovata a event in winter 2010. took place on Ximen Island, Zhejiang Province, China. We measured physiological recovery 2–3-, 5–6-, 9–10- 54–55-year-old K. trees after freezing injury February March 2011 2012,...

The relationship between the radar reflectivity factor (Z) and rainfall rate (R) is recalculated based on observations from 10 Doppler radars hourly measurements at 6529 automatic weather stations over Yangtze–Huaihe River basin. data were collected by National 973 Project June to July 2013 for severe convective events. Z–R combined with an empirical qr–R obtain a new Z–qr relationship, which then used correct observational operator in three-dimensional variational (3DVar) assimilation...

As an important fishery resource and endangered species, studying the habitat of Coilia nasus (C. nasus) is highly significant. This study used survey data from southern Zhejiang coastal waters 2016 to 2020, employing a maximum entropy model (MaxEnt) map distribution C. nasus. Model performance was evaluated using two metrics: area under curve (AUC) receiver operating characteristic for training test sets true skill statistics (TSS). aimed predict explore how environmental variables...