Publications by authors named "Xiu-jun Lu"

RNA interference (RNAi)-based biopesticides offer an attractive avenue for pest control. Previous studies revealed high RNAi sensitivity in larvae, showcasing its potential for grub control. In this study, we aimed to develop an environmentally friendly RNAi method for larvae.

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Chitin deacetylase (CDA) can accelerate the conversion of chitin to chitosan, influencing the mechanical properties and permeability of the cuticle structures and the peritrophic membrane (PM) in insects. Putative Group V CDAs SeCDA6/7/8/9 (SeCDAs) were identified and characterized from beet armyworm larvae. The cDNAs of contained open reading frames of 1164 bp, 1137 bp, 1158 bp and 1152 bp, respectively.

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  • Wood quality is crucial for sawmills, and this study created models to predict knot size in Mongolian oak by analyzing external features from 53 trees.
  • Using manual measurements and X-ray technology, researchers found that knots are mostly located in the middle section of oak stems, with notable correlations between knot size and the size of scars left on the wood surface.
  • The predictive models demonstrated over 95% accuracy, indicating they can help enhance oak timber production and reduce economic losses from knots, while also providing insights into wood quality characteristics.
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Six plots with an area of 0.1 hm were thinned in 2018. A field survey was carried out in 2020 to examine the effects of different stand densities (high: 900 trees·hm; medium: 720 trees·hm; low: 600 trees·hm) on growth and regeneration of stands and understory species diversity of secondary .

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K. Koch is endemic to China and has high medicinal and ornamental values. However, its seed exhibits morphophysiological dormancy, and the molecular mechanisms of which are not clearly understood.

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Magnolia sieboldii K. Koch (M. sieboldii) is a deciduous Chinese tree species of the Magnoliaceae family with high ornamental, medicinal, and economic benefits.

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In plants, microRNAs (miRNAs) are a class of non-coding small RNAs that play important roles in various biological processes, such as seed development, dormancy and germination. In these stages, seeds are regulated by various extrinsic environmental factors and intrinsic hormones. Different species of seeds have distinct development and dormancy characteristics.

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  • Magnolia sieboldii is a deciduous tree from China that has a unique deep dormancy, and researchers analyzed changes in its seed protein at various stratification stages to understand its germination better.
  • The study found 80 different proteins with varying levels of abundance during seed stratification, with specific proteins like ADP-glucose pyrophosphorylase degrading during germination, indicating their role in energy metabolism and embryo development.
  • The analysis revealed that starch granules diminished over time, providing critical nutrients for germination, and identified four storage proteins that decreased in quantity, contributing to seed readiness for growth.
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Unlabelled: The control of abscission is an important agricultural concern because of its substantial effect on crop yield and quality. Changes in gene expression are correlated with the ethylene-mediated execution of abscission. However, only few large-scale proteomic studies focused on tomato pedicel abscission.

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Taking arsenic (As)-contaminated paddy soil as test object, and by using high performance liquid chromatography inductively coupled plasma-mass spectrometry (HPLC-ICP-MS), this paper studied the variations of As species in soil solution when the soil was sterilized or non-sterilized and incubated at different temperatures (5, 27, and 50 degrees C) under flooding. In the soil solution (pore water), only As(III) (arsenite), As(V) (arsenate), and DMA(V) ( dimethylarsinic acid) were detected, but no MMA(V)(mono methylarsinic acid) was found. With the increasing time of flooding and at the test temperatures, arsenite became the predominant species, averagely accounting for 64%, followed by As(V), with the proportion of 35%, and DMA(V), with the least proportion of 1%.

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Rice and drinking water are recognized as the dominant sources of arsenic (As) for human intake, while little is known about As accumulation and speciation in Chinese Herbal Medicines (CHMs), which have been available for many hundreds of years for the treatment of diseases in both eastern and western cultures. Inorganic arsenic was the predominant species in all of CHMs samples. The levels of inorganic arsenic in CHMs from fields and markets or pharmacies ranged from 63 to 550 ng/g with a mean of 208 ng/g and 94 to 8683 ng/g with a mean of 1092 ng/g, respectively.

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