Comment on “Is Yuan in China’s Three Gorges a Gibbon or a Langur?”

International Journal of Primatology -     

Morphology of the Bony Labyrinth Supports the Affinities of Paradolichopithecus with the Papionina

International Journal of Primatology - Discoveries in recent decades indicate that the large papionin monkeys Paradolipopithecus and Procynocephalus are key members of the Late Pliocene –...     

Comparative Transcriptome Analyses Reveal Genes Related to Spine Development in Cucumber (<i>Cucumis sativus</i>)

Fruit spine is an important quality trait of cucumber. To better understand the molecular basis of cucumber spine development and function, RNA-Seq was performed to identify differentially expressed genes (DEGs) in fruit spines of different development stages, namely, 8 days before anthesis (SpBA8), anthesis (SpA) and 8 days after anthesis (SpAA8). Stage-wise comparisons obtained 2,259 (SpBA8 vs. SpA), 4,551 (SpA vs. SpAA8), and 5,290 (SpBA8 vs. SpAA8) DEGs. All the DEGs were classified into eight expression clusters by trend analysis. Among these DEGs, in addition to the Mict, Tril, CsTTG1, CsMYB6, NS, and Tu genes that have been reported to regulate fruit spine formation, we found that the CsHDG11, CsSCL8, CsSPL8, CsZFP6 and CsZFP8 may also be involved in spine development in cucumber. Our study provides a theoretical basis for further research on molecular mechanisms of spine development in cucumber.     

Successful application of microspore culture in pakchoi (Brassica campestris L. ssp. chinensis Makino var. communis Tsen et Lee) for hybrid breeding

Protoplasma - Microspore embryogenesis is an effective method of obtaining double haploid (DH) lines in only 1&nbsp;year. However, the microspore embryogenesis protocol was not efficient in...     

Subcellular Distribution and Chemical Forms of Cadmium in the Medicine Food Homology Plant <i>Platycodon grandiflorum</i> (Jacq.) A.DC.

Although Platycodon grandiflorum (Jacq.) A.DC. is a renowned medicine food homology plant, reports of excessive cadmium (Cd) levels are common, which affects its safety for clinical use and food consumption. To enable its Cd levels to be regulated or reduced, it is necessary to first elucidate the mechanism of Cd uptake and accumulation in the plant, in addition to its detoxification mechanisms. This present study used inductively couple plasma-mass-spectrometry to analyze the subcellular distribution and chemical forms of Cd in different tissues of P. grandiflorum. The experimental results showed that Cd was mainly accumulated in the roots [predominantly in the cell wall (50.96%–61.42%)], and it was found primarily in hypomobile and hypotoxic forms. The proportion of Cd in the soluble fraction increased after Cd exposure, and the proportion of insoluble phosphate Cd and oxalate Cd increased in roots and leaves, with a higher increase in oxalate Cd. Therefore, it is likely that root retention mechanisms, cell wall deposition, vacuole sequestration, and the formation of low mobility and low toxicity forms are tolerance strategies for Cd detoxification used by P. grandiflorum. The results of this study provide a theoretical grounding for the study of Cd accumulation and detoxification mechanisms in P. grandiflorum, and they can be used as a reference for developing Cd limits and standards for other medicine food homology plants.     

牛蛙冬眠期及其前后的消化道嗜银细胞分布

为研究两栖类在冬眠期及其前后消化道嗜银细胞是否参与冬眠期的消化调节,本文以牛蛙(Rana catesbeiana)为实验对象,采用Grimelius银染法,对冬眠期前(n = 10)、冬眠期(n = 10)和冬眠期后(n = 10)牛蛙消化道嗜银细胞的形态及密度进行比较研究。结果表明,牛蛙消化道各部位均有嗜银细胞分布;牛蛙消化道嗜银细胞形态在冬眠期、冬眠期前及冬眠期后无差异,均为锥体型、梭型和椭圆型;牛蛙消化道各部位具有外分泌功能的锥体型和梭形嗜银细胞密度在3个时期均显著高于具有内分泌功能的椭圆型嗜银细胞密度(P < 0.01);3个时期牛蛙消化道嗜银细胞分布密度高峰均位于空肠处,但低谷有所不同,冬眠期前和冬眠期后牛蛙消化道嗜银细胞的分布密度低谷位于食管,而冬眠期其分布密度低谷位于贲门;3个时期相比,冬眠期前和冬眠期幽门处分布密度差异不显著(P > 0.05),其余部位均有差异,且食管、胃、十二指肠、空肠、回肠和直肠中嗜银细胞分布密度在冬眠期显著高于冬眠期前和冬眠期后(P < 0.05);冬眠期前和冬眠期后消化道嗜银细胞分布密度呈倒“U”型趋势,冬眠期分布密度呈现“~”型趋势。结合相关研究,推测牛蛙嗜银细胞分布密度的改变可能与机体适应不同生理状态及消化功能的调节有关。     

湖南郴州发现岭南两头蛇

2022年8月,于湖南省郴州市永兴县湘阴渡镇（113°01′18′′E,26°11′87′′N,海拔174 m）采集到两头蛇活体标本1号,通过形态测量比较,发现所采集标本与中国广东省分布的岭南两头蛇（Calamariaarcana）形态特征基本一致;后基于线粒体Cytb基因片段进行分子系统发育分析,结果显示该标本与岭南两头蛇形成高支持率单系群（后验概率PP为1.00,自举值BS为100）,所采集标本与岭南两头蛇的遗传距离为1%。综合形态学和分子生物学证据,最终确定该标本为两头蛇科（Calamariidae）两头蛇属的岭南两头蛇,系湖南省蛇类分布新记录种。     

汉族ABO血型的皮纹特征分析

作者对芜湖地区３８２例（男２２０人;女１６２人）汉族ＡＢＯ血型的皮纹特征进行了分析,其中Ｏ型１３０人,Ａ型１１３人,Ｂ型１０１人,ＡＢ型３８人。分析比较了指纹类型、指纹组合格局、指嵴纹计数、掌嵴纹计数、ａｔｄ角,掌部真实花纹,掌褶纹和拇趾球纹等项参数,结果表明,ＡＢＯ各血型的皮纹参数间有若干统计学差异。     

浙江金华北山植物区系地理的研究

金华北山约有种子植物１４０科、５１９属、１０５２种。区系成分中,以北温带、泛热带、东亚三种成分为主,植物区系具明显的亚热带性质。以植物地理成分为指标,对金华山与全国其它１４个山地的植物区系进行了模糊聚类分析。结果表明,庐山、天目山植物区系与浙南一闽北的九龙山、武夷山植物区系之间无明显的分界线。