Institute of Botany of Shaanxi Province

Fengcheng, China

Institute of Botany of Shaanxi Province

Fengcheng, China

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PubMed | Baoding University and Institute of Botany of Shaanxi Province
Type: Journal Article | Journal: Zootaxa | Year: 2015

Two new species of the genus Xizicus are described, namely Xizicus (Eoxizicus) uncicercus Mao & Shi sp. nov. and Xizicus (Eoxizicus) dischidus Di, Han & Shi sp. nov. from China, in addition, photographs of morphological structure of the species are provided. All type specimens are deposited in the Museum of Hebei University, Baoding, P. R. China.


PubMed | Institute of Botany of Shaanxi Province and CAS Institute of Botany
Type: | Journal: Scientific reports | Year: 2017

Plants adapt to environment by plastic growth which will be transferred to offspring through transgenerational effect. Performance and response of maternal and offspring plant will affect population dynamics and community composition. However, it is scarcely understood how maternal nutrient environment affect the performance and response of offspring through transgenerational effect. Here we studied the impacts of nitrogen (N) and phosphorus (P) enrichment on maternal and offspring performances and responses of Stipa krylovii and Artemisia frigida. Seeds were collected from maternal plant experiencing N or/and P addition for three years in Inner Mongolia grassland. We found that maternal nutrient addition significantly affected seed traits, offspring biomass, and offspring responses of A. frigida. Maternal N addition significantly affected maternal reproductive biomass, seed traits of S. kryloii. Maternal P addition of S. kryloii significantly affected seed qualities, seedling biomass and seeding response to N addition. Our results suggested that transgenerational effects of N and P enrichment to the two dominant plant species existed in this ecosystem. Furthermore, the two species exhibited different adaptive strategies to future nutrient addition. These findings indicate that maternal environmental effect should be considered into the model projection of vegetation dynamics in response to ongoing environmental change.


PubMed | Northwest Agriculture and Forestry University, University of Pisa and Institute of Botany of Shaanxi Province
Type: Journal Article | Journal: Chirality | Year: 2016

A novel sesquiterpenoid dimer, named multistalide C (1), together with two known congeners, shizukaols C (2) and D (3), was isolated from the whole plant of Chloranthus japonicus Sieb. The structures of compounds 1-3 were elucidated by extensive HR-ESI-MS, 1D, and 2D NMR spectroscopic analysis. Compounds 1-3 exhibited significant toxic effects on brine shrimp larvae (Artemia salina). The absolute configuration of 1 was established by CD/TDDFT calculations. The related compound chlorahololide A was also reinvestigated. The previous assignment of the absolute configuration of chlorahololide A and several related sesquiterpenoid dimers, based on an incorrect application of the exciton chirality method, is criticized.


PubMed | Institute of Botany of Shaanxi Province and Nanjing Agricultural University
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

The title compound (common name: sclaral), C16H28O2, is a sclareolide derivative, which was synthesized from sclareolide itself. In the mol-ecule, the two six-membered rings, A and B, of the labdane skeleton adopt chair conformations and the five-membered O-containing heterocyclic ring C displays an envelope conformation, with the methine C atom of the fused C-C bond as the flap. In the crystal, mol-ecules are linked by O-HO hydrogen bonds, forming chains propagating along [100].


PubMed | Institute of Botany of Shaanxi Province and Nanjing Agricultural University
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

The title compound, C23H35NO2, is an amide derivative of the lactone (+)-sclareolide, and was synthesized from natural sclareol. In the mol-ecular structure, the two six-membered rings (A and B) of the labdane skeleton are trans-fused, and adopt chair conformations. There is an intra-molecular N-HO hydrogen bond present forming an S(7) ring motif. In the crystal, O-HO hydrogen bonds link the mol-ecules into helical chains propagating along the b-axis direction. The chains are linked via C-H inter-actions, forming a three-dimensional structure.


PubMed | Shaanxi Province Academy of science and Institute of Botany of Shaanxi Province
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

The title compound, C15H22O3H2O, is a natural producr isolated from Chloranthus japonicus, which is a eudesmane sesquiterpenoid. The two trans-fused six-membered rings have chair confomations. In the crystal, O-HO hydrogen bonds link the components into corrugated layers parallel to the bc plane. There are C-HO inter-actions present within and between the layers.


PubMed | Northwest University, China and Institute of Botany of Shaanxi Province
Type: | Journal: Plant science : an international journal of experimental plant biology | Year: 2014

The formation of secretory cavities in Rutaceae has been the subject of great interest. In this study, cytological events that are involved in the lysigenous formation of the secretory cavities in the leaves of Dictamnus dasycarpus are characterized by an interesting pattern of programmed cell death (PCD). During the developmental process, clusters of cells from a single protoepidermal cell embark on different trajectories and undergo different cell death fates: the cell walls of the secretory cells have characteristics of thinning or complete breakdown, while the sheath cells present a predominantly thick-walled feature. A DAPI assay shows deformed nuclei that are further confirmed to be TUNEL-positive. Gel electrophoresis indicates that DNA cleavage is random and does not result in ladder-like DNA fragmentation. Ultrastructurally, several remarkable features of PCD have been determined, such as misshapen nuclei with condensed chromatin and a significantly diffused membrane, degenerated mitochondria and plastids with disturbed membrane systems, multivesicular bodies, plastolysomes, vacuole disruption and lysis of the center secretory cell. Cytological evidence and Nile red stains exhibit abundant essential oils accumulated in degenerated outer secretory cells after the dissolution of the center secretory cell. In addition, explanations of taxonomic importance and the relationship between PCD and oil droplet accumulation in the secretory cavities are also discussed.


PubMed | Northwest Agriculture and Forestry University, Institute of Botany of Shaanxi Province and Jiangsu University of Science and Technology
Type: Journal Article | Journal: Natural product research | Year: 2016

Two new sesquiterpenes, namely, 1,10-dihydroxy-eremophil-7(11), 8-dien-12,8-olide (1) and 8,12-epoxy-1-hydroxyeudesm-3,7,11-trien-9-one (2), together with three known sesquiterpenoids, shizukolidol (3), 4-hydroxy-5(H)-8-methoxy-eudesm-7(11)-en-12,8-olide (4), and neolitacumone B (5), and two known monoterpenes, (3R,4S,6R)-p-menth-1-en-3,6-diol (6) and (R)-p-menth-1-en-4,7-diol (7), were isolated from the whole plant of Chloranthus japonicus Sieb. Their structures were elucidated on the basis of spectroscopic data analysis and comparison with those of related known compounds. Compounds 4-7 were isolated from this plant for the first time.


PubMed | Institute of Botany of Shaanxi Province
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

The title compound [systematic name: [(1,14,16)-20-ethyl-8,9,10-trihy-droxy-1,14,16-tri-meth-oxy-aconitan-4-yl 2-amino-benzoate], C30H42N2O8, a natural C19-diterpenoid alkaloid, possesses an aconitane carbon skeleton with four six-membered rings and two five-membered rings. The fused ring system contains two chair, one boat, one twist-boat and two envelope conformations. Intra-molecular N-HO hydrogen bonds are observed between the amino and carbonyl groups. The mol-ecules are linked together via O-HO hydrogen bonds, forming a three-dimensional framework.


PubMed | Institute of Botany of Shaanxi Province
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2015

The title compound, C30H42N2O7 [systematic name: (1S,4S,5S,7S,8S,9S,10S,11S,13R,14S,16S,17R)-20-ethyl-4,8,9-trihy-droxy-1,14,16-tri-meth-oxy-aconitan-4-yl 2-amino-benzoate], isolated from roots of Aconitum sinomontanum Nakai, is a typical aconitane-type C19-diterpenoid alkaloid, which crystallizes with two independent mol-ecules in the asymmetric unit. The conformations of the two independent mol-ecules are closely similar. Each mol-ecule comprises four six-membered rings (A, B, D and E) including one six-membered N-containing heterocyclic ring (E), and two five-membered rings (C and F). Rings A, B and E adopt chair conformations, while ring D displays a boat conformation. Five-membered rings C and F exhibit envelope conformations. IntramolecularN-HO hydrogen bonds between the amino group and carbonyl O atom help to stabilize molecular structure. In the crystal, O-HO hydrogen bonds link the mol-ecules into zigzag chains propagating in [010].

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