华南地区2种优质牧草对入侵杂草薇甘菊的化感作用

研究了2种牧草大翼豆和旋扭山绿豆,以及入侵杂草薇甘菊的化感作用。结果表明,化感作用大小表现为:大翼豆〉薇甘菊〉旋扭山绿豆。大翼豆对薇甘菊具有化感抑制作用,其中茎的抑制作用大于叶,高浓度的抑制作用大于低浓度。旋扭山绿豆对薇甘菊的化感抑制作用显著低于大翼豆。另一方面,薇甘菊对2种牧草的化感作用较弱,远低于2种牧草对薇甘菊的抑制作用。可见,果园间作牧草大翼豆比旋扭山绿豆在防止薇甘菊入侵方面更具有优势。     

新疆棘豆属植物新资料

对野外采集的新疆棘豆属植物以及标本进行鉴定分析,结果表明:马尔洋黑毛棘豆是新变种,白花米尔克棘豆、白花冷棘豆、白花二裂棘豆、白花庞氏棘豆和白花小叶棘豆是5个新变型.短梗棘豆、长翼棘豆、鸟状棘豆和长苞黄花棘豆是新疆地理分布新记录.并对新变种马尔洋黑毛棘豆和长翼棘豆的果期特征进行了描述.     

优质牧草旋扭山绿豆对低温胁迫的生理响应及其耐寒性快速鉴定

为了解旋扭山绿豆(Desmodium intortum)对低温的耐受性,以在南方各省广泛种植的优质牧草紫花大翼豆(Macroptilium atropurureum)为对照,研究了旋扭山绿豆对低温胁迫的生理响应。结果表明,低温胁迫(4℃)下,旋扭山绿豆的实际光能转化效率(Yield)和光合电子传递效率(ETR)在第2～8天时下降幅度显著低于紫花大翼豆(P0.05)。低温处理使旋扭山绿豆和紫花大翼豆超氧化物歧化酶(SOD)活性显著增加(P0.05);过氧化氢酶(CAT)活性则显著降低;旋扭山绿豆的过氧化物酶(POD)没有显著变化(P0.05),但紫花大翼豆下降了47.11%。低温处理下旋扭山绿豆游离脯氨酸和可溶性糖含量显著高于紫花大翼豆(P0.05)。回归分析、抵抗力指数和营养成分分析表明,旋扭山绿豆是一种抗寒性与营养价值均优于紫花大翼豆的优良牧草,其中Yield、ETR、CAT与渗透调节物质(游离脯氨酸和可溶性糖)可以作为旋扭山绿豆耐寒性鉴定的重要生理指标。     

四棱豆与四翼豆的利用与传播

四棱豆与四翼豆均为热带经济植物。四棱豆嫰荚可作为蔬菜食用。四翼豆在非洲民间习惯将它的荚果用来调味菜肴和制作蔬菜。这两种植物均有药用、美容等功效。本文报道这两种植物的开发利用历史及其主要用途。     

四棱豆的开发前景及其栽培技术

四棱豆的开发前景及其栽培技术黄斌（湖南省郴州市生物所,４２３０００）四棱豆（ＷｉｎｇｅｄＢｅａｕ）又名翅豆、翼豆,原产巴布亚新几内亚和泰国、菲律宾、印尼、尼日利亚等东南亚地区。１９７３年以前还默默无闻的四棱豆,近年来却举世瞩目、身价百倍,人们称其为豆...     

四棱豆的开发前景及其高产栽培技术

四棱豆的开发前景及其高产栽培技术黄斌四棱豆（英名ＷｉｎｇｅｄＢｅａｕ）（学名Ｐｓｏｐｈｏｃａｒｐｕｓｔｅｔｒａｇｏ。ｏｌｏｂｕｓ）又名翅豆、翼豆，原产巴布亚新几内亚和印度、泰国、菲律宾、印尼等东南亚地区。人ＯＪ称其为豆科新秀、绿色的金子。８０年代以来...     

小鼠L833细胞系及亚系标记染色体分析

粒细胞白血病细胞系L₈₃₃是由小鼠垃细胞白血病L₈₀₁的骨髓细胞经体外液体培养建立起来的体外细胞系,L₈₃₃-A和L₈₃₃-B是从L₈₃₃分离出的亚系。L₈₃₃、 L₈₃₃-A和L₈₃₃-B细胞系及亚系核型分析采用胰蛋白酶消化、姬姆萨染色分带技术。结果显示L₈₃₃细胞系核型与L₈₀₁瘤株核型相同,染色体数量为亚二倍体,众数为39条,Y染色体丢失和存在一个大的标记染色体（Mr). L₈₃₃-A和L₈₃₃-B亚系各存在另一条标记染色体Mra和Mrb,同时标记染色体Mr仍然存在在L₈₃₃-A和L₈₃₃-B两个亚系内。     

小鼠L833细胞系及亚系标记染色体分析

粒细胞白血病细胞系L_(833)是由小鼠粒细胞白血病L_(801)的骨髓细胞经体外液体培养建立起来的体外细胞系,L_(833)-A和L_(833)-B是从L_(833)分离出的亚系。L_(833)、L_(833)-A和L_(833)-B细胞系及亚系核型分析采用胰蛋白酶消化、姬姆萨染色分带技术。结果显示L_(833)细胞系核型与L_(801)瘤株核型相同,染色体数量为亚二倍体,众数为39条,Y染色体丢失和存在一个大的标记染色体(Mr).L_(833)-A和L_(833)-B亚系各存在另一条标记染色体Mra和Mrb,同时标记染色体Mr仍然存在在L_(833)-A和L_(833)-B两个亚系内。     

国外四稜豆研究近况

四梭豆(翼豆)(Psophocarpus tetragonolobus DC.)系豆科的草质或亚灌木状缠绕植物,原产亚洲热带地区。据报道,四棱豆除茎以外,叶、根、花、荚果和种子均可食用,兼有四季豆、豌豆,菠菜、大豆、番茄和蘑菇等优点。它各部分富含蛋白质、维生素和矿物质,这常是热带国家所缺乏的。     

中文蜻蜓常用名称考

在我国,蜻蜓有多种名称,目前仍在使用的有蜻蜓、蜻蛉、水虿、、豆娘等。它们当中,有些是源自蜻蜓类昆虫的体色,如“蜻、”;有些是由蜻蜓的身体形状而来,如“蜓、蛉、水虿”。而“豆娘”出现最晚,应用时间也最短。中文之“豆娘”与日文中的“豆娘”关系甚为复杂,目前尚无定论。     

Microbial Degradation of α-Picolinic Acid, 2-Pyridinecarboxylic Acid

The biological effects of raw winged bean seeds were investigated with feeding experiments on rats, and the effects of lectin (phytohemagglutinin) present in the seeds are discussed. Administration of a 30% raw winged bean diet caused strong growth depression in young rats, and led to death within 10 ~ 20 days, inducing severe damage to the small intestine of the rats. Significant morphological changes of the intestinal mucosa were observed with a microscopic investigation. As the lethal effect was eliminated by autoclaving but not removed with supplementation of 0.5% l-methionine to the raw winged bean diet, the lectin was assumed to be closely related to the deleterious effects of raw winged bean. In vitro and in vivo digestion tests of the lectin revealed that the winged bean lectin had resistance to peptic, pancreatic and membrane digestions. The hemagglutinating activity was also detected in the intestinal mucosa and faeces from rats ingesting the raw winged bean or its purified lectin. The binding action of lection to mucosal epitheliums of the gastrointestinal tract is suggested to be the initial step of the deleterious effects induced by the winged bean lectin.     

Effects of Nitrate Level on Nitrogen Metabolism in Winged Bean and Soya Bean

The effects of high (15 mM) and low (0.75 mM) solution nitratelevels on nitrogen metabolism in three genotypes (IL 7A, IL13 and IL 21) of winged beans [Psophocarpus tetragonolobus (L.)DC.] and one genotype (Williams) of soya bean [Glycine max (L.)Merrill] were investigated. Plants were grown for 42 days ina greenhouse in solution culture prior to sampling. The 15 mM nitrate treatment resulted in greater growth of allplant parts except roots. Growth of soya beans was more responsiveto nitrate level than was growth of winged beans. The high nitratelevel inhibited nodulation in all plants. The IL 13 and IL 21winged bean genotypes had similar nitrogenase activity (acetylenereduction per plant) as the soya bean and IL 7A winged beangenotype had lower activity. However, the IL 13 winged beangenotype had higher nitrogenase activity (acetylene reductionper unit nodule mass) than the other three genotypes which allhad similar activity. The 15 mM solution nitrate level stimulatedleaf and root nitrate reductase (NR) activity for all plants.All winged bean genotypes had higher leaf NR activity and higherpercentage reduced- and nitrate-nitrogen contents of leavesand stems compared with soya beans. However, total protein (reducednitrogen) was greater in soya beans when sampled indicatingthat more nitrate had been metabolized by soya beans than bywinged beans during the 42-day growth period. Psophocarpus tetragonolobus (L.) DC., winged bean, Glycine max (L.) Merrill, Soya bean, nitrate reductase, nitrogen fixation, nitrogenase activity, nodulation     

Comparing Anthracene and Fluorene Degradation in Anthracene and Fluorene-Contaminated Soil by Single and Mixed Plant Cultivation

The ability of three plant species (sweet corn, cucumber, and winged bean) to remediate soil spiked with 138.9 and 95.9 mg of anthracene and fluorene per kg of dry soil, respectively, by single and double plant co-cultivation was investigated. After 15 and 30 days of transplantation, plant elongation, plant weight, chlorophyll content, and the content of each PAH in soil and plant tissues were determined. Based on PAH removal and plant health, winged bean was the most effective plant for phytoremediation when grown alone; percentage of fluorene and anthracene remaining in the rhizospheric soil after 30 days were 7.8% and 24.2%, respectively. The most effective combination of plants for phytoremediation was corn and winged bean; on day 30, amounts of fluorene and anthracene remaining in the winged bean rhizospheric soil were 3.4% and 14.3%, respectively; amounts of fluorene and anthracene remaining in the sweet corn rhizospheric soil were 4.1% and 8.8%, respectively. Co-cultivation of sweet corn and cucumber could remove fluorene to a higher extent than anthracene from soil within 15 days, but these plants did not survive and died before day 30. The amounts of fluorene remaining in the rhizospheric soil of corn and cucumber were only 14% and 17.3%, respectively, on day 15. No PAHs were detected in plant tissues. This suggests that phytostimulation of microbial degradation in the rhizosphere was most likely the mechanism by which the PAHs were removed from the spiked soil. The results show that co-cultivation of plants has merit in the phytoremediation of PAH-spiked soil.     

Lipid composition in long-day and short-day forms of the black bean aphid,Aphis fabae

Long-day reared winged (alate) virginoparae from laboratory stock cultures which had been reared throughout larval development on bean stipules were significantly smaller (0.46+/-0.02 mg; mean+/-SEM) than short-day-reared gynoparae (0.69+/-0.04 mg; the winged autumn migrant) which completed development on intact beans. When winged virginoparae were raised from the third stadium on bean seedlings they grew larger (0.86+/-0.02 mg) but the gynoparae contained proportionally more total lipid (12.1+/-0.4%, gynoparae; 7.4+/-0.6%, stipule-reared virginoparae; 9.2+/-0.8%, seedling-reared virginoparae). Wingless aphids (apterae) were heavier, whether reared in short (0.99+/-0.03 mg) or long days (0.95+/-0.04 mg) but the lipid content was low (4.5+/-0.7% and 4.9+/-0.6%, respectively). The triacyl-, diacylglycerol and the phospholipid contents followed this trend but analysis of the fatty acid moieties of the triacylglycerides showed phenotypic differences. The ratios of myristic acid:palmitic acid were significantly higher in the winged forms than the wingless forms and were much higher in the gynoparae than the winged virginoparae. Short-day-reared wingless females also had a higher myristic acid:palmitic acid ratio than long-day-reared apterae, possibly reflecting the embryonic gynoparae maturing in their ovaries.     

Bio-functional legumes with nutraceutical, pharmaceutical, and industrial uses

To help or prevent certain health problems and adequately feed people, there is a need for added contributions from legumes. Legumes produce primary and secondary metabolites and other phytochemicals such as nutraceuticals, pharmaceuticals, pesticides, and industrial products. In addition, legumes such as hyacinth bean seed contain nearly 10% more fiber while winged bean contains three times more fiber than common bean. The potential breast cancer fighting chemical known as kievitone is found in hyacinth bean but not in common bean nor soybean. Both agmatine and isovitexin are potential combatants of microbial organisms in mammals including humans. Agmatine and isovitexin are not found in soybean nor common bean, however they exist in winged bean. Studies regarding value added traits such as the bio-functional and biologically active components of legumes have only recently begun because most specialty phytochemicals are extracted from other plant sources. Not only can bio-functional legumes provide healthy food constituents for use as nutraceuticals, pharmaceuticals, and pesticidals, but they can increase healthy food resources worldwide. Bio-functional legumes have been used in the past primarily for forage, pasture, minor food, green manuring, and erosion control. Current uses include these previously mentioned plus some fairly new ones such as hyacinth bean used as an ornamental and wildlife food. The future for these common bean relatives is for use in the health markets as new medicines or nutraceuticals and to provide farmers with additional crop production as phytopharmaceutical or nutraceutical crops.     

Generality and Diversity of Winged Bean (Psophocarpus tetragonolobus) Protein in Eight Various Lines

Protein components from eight lines of winged bean (Psophocarpus tetragonolobus) seeds which were originally introduced from Papua New Guinea, Indonesia, Nigeria, and Ishigaki, and cultivated in Okinawa and Fukuoka, were investigated. Two major peaks which had sedimentation coefficients, s₂₀, of about 2.5S and about 6.5S (6.0 to 6.6 for the 8 lines), and no larger component were observed in all specimens with more than 90% extraction. Electrophoretic profiles of the “6.5S” component(s) which was separated with Sepharose 6B column chromatography showed a main broad band and a few minor bands which seemed to be essentially similar among the eight lines of winged bean. Thus the “6.5S” protein surely could be regarded as the common storage protein in winged bean seeds. The subunit structure of the “6.5S” component(s) in SDS solution consisted of four major bands. The “2.5S” components were mixtures and combinations of various proteins which were distinctly different from one selection to another.     

Maternal reproductive decisions are independent of feeding in the black bean aphid,Aphis fabae

Aphids are phloem feeders and an important assumption has been that reproduction is initiated only after phloem ingestion. Here we investigate the plant tissue location of parturition cues in winged and wingless, summer virginoparae and autumn migrants (gynoparae) of the black bean aphid, Aphis fabae. These seasonal forms have different host preferences. Using electrical penetration graph (EPG: to observe activity of the mouthparts) and video-monitoring procedures we demonstrate that the time to first parturition after host-plant contact is significantly shorter than the time to first registered phloem contact in the summer winged form. In gynoparae, the time to first parturition does not significantly differ from time to first phloem contact but is shorter than time to first phloem ingestion. Times to first parturition, first registered phloem contact and first phloem ingestion do not differ significantly in the summer wingless form. Simultaneous EPG and video recording procedures show that a high proportion of individuals of all morphs (45-70%) initiate reproduction before sustained phloem activities (salivation/ingestion). The only behaviours that all individuals demonstrate before first parturition are ‘non-penetration’ (aphid on plant surface with mouthparts outside plant) and stylet ‘pathway activity’, including secretion of gelling saliva and penetration of the non-vascular (epidermis and mesophyll) cells. A short period of penetration of the peripheral plant tissues (five cell punctures per individual) by aphids tethered and monitored by EPG decreases the time to first parturition of the winged summer form when subsequently placed on a Parafilm sachet containing 15% sucrose solution. This treatment also significantly increases the incidence of reproduction and individual reproductive output of gynoparae over a 24-h period. No detectable effects of tissue penetration on subsequent reproductive output are observed in the wingless summer form. Additionally, EPGs reveal that a number of aphids of all morphs display xylem ingestion, which occurs predominantly before initiation of phloem feeding but is not necessary to initiate parturition. It is concluded that aphids are likely to detect parturition cues during stylet punctures of cells within peripheral tissue layers, before reaching the phloem vessels.     

Analysis of differential accumulation of winged bean Kunitz chymotrypsin inhibitor mRNA species by a sequence-specific termination method

Winged bean Kunitz chymotrypsin inhibitor (WCI) is encoded by a multigene family and accumulation of its mRNA is restricted in mid-maturation stage seeds and tuberous roots. In this paper, we analyzed the accumulation of mRNA derived from each WCI gene using a novel method: sequence-specific termination analysis. The results demonstrated that the accumulation of each WCI mRNA was differentially regulated in winged bean plants.     

Organellar and Cytosolic Localization of Four Phosphoribosyl Diphosphate Synthase Isozymes in Spinach

We report on the efficacy of proteinase inhibitors (PIs) from three host plants (chickpea [Cicer arietinum], pigeonpea [Cajanus cajan], and cotton [Gossypium arboreum]) and three non-host (groundnut [Arachis hypogea], winged bean [Psophocarpus tetragonolobus], and potato [Solanum tuberosum]) in retarding the growth of Helicoverpa armigera larvae, a devastating pest of important crop plants. Enzyme assays and electrophoretic analysis of interaction of H. armigera gut proteinases (HGPs) with PIs revealed that non-host PIs inhibited HGP activity efficiently whereas host PIs were ineffective. In the electrophoretic assay, trypsin inhibitor activity bands were detected in all of the host and non-host plants, but HGP inhibitor activity bands were present only in non-host plants (except cotton in the host plant group). H. armigera larvae reared on a diet containing non-host PIs showed growth retardation, a reduction in total and trypsin-like proteinase activity, and the production of inhibitor-insensitive proteinases. Electrophoretic analysis of PI-induced HGP showed differential regulation of proteinase isoforms. Interestingly, HGP activity induced in response to dietary potato PI-II was inhibited by winged bean PIs. The optimized combination of potato PI-II and winged bean PIs identified in the present study and their proposed successive use has potential in developing H. armigera-resistant transgenic plants.     

Transcriptional Activities of a Winged Bean Kunitz Chymotrypsin Inhibitor Gene Promoter in Stable and Transient Expression Systems

Sequential deletions of the promoter region of the WCI-3b gene, which encodes the major chymotrypsin inhibitor of winged bean, were constructed and their expression was analyzed in transgenic tobacco plants and in bombarded winged bean seeds. In transgenic tobacco plants, a critical promoter region which is important for high levels of expression in seeds was identified, but deletion of this region had essentially no effect when bombarded into winged bean seeds.