Biochemical and Proteomic Analyses Reveal that Populus cathayana Males and Females Have Different Metabolic Activities under Chilling Stress

2012 ◽  
Vol 11 (12) ◽  
pp. 5815-5826 ◽  
Author(s):  
Sheng Zhang ◽  
Lihua Feng ◽  
Hao Jiang ◽  
Wujun Ma ◽  
Helena Korpelainen ◽  
...  
Keyword(s):  
Chilling Stress ◽  
Populus Cathayana ◽  
Males And Females ◽  
Proteomic Analyses ◽  
Metabolic Activities

Comparative physiological, ultrastructural and proteomic analyses reveal sexual differences in the responses of Populus cathayana under drought stress

PROTEOMICS ◽  
2010 ◽  
Vol 10 (14) ◽  
pp. 2661-2677 ◽  
Author(s):  
Sheng Zhang ◽  
Fugui Chen ◽  
Shuming Peng ◽  
Wujun Ma ◽  
Helena Korpelainen ◽  
...  
Keyword(s):  
Drought Stress ◽  
Sexual Differences ◽  
Populus Cathayana ◽  
Proteomic Analyses

scholarly journals Metabolic and physiological analyses reveal that Populus cathayana males adopt an energy-saving strategy to cope with phosphorus deficiency

2019 ◽  
Vol 39 (9) ◽  
pp. 1630-1645 ◽  
Author(s):  
Sheng Zhang ◽  
Duoteng Tang ◽  
Helena Korpelainen ◽  
Chunyang Li
Keyword(s):  
Amino Acid ◽  
Energy Saving ◽  
Acid Content ◽  
Phosphorus Deficiency ◽  
Metabolome Analysis ◽  
Inorganic Pyrophosphate ◽  
P Deficiency ◽  
Populus Cathayana ◽  
Males And Females ◽  
Pi Deficiency

Abstract Dioecious trees have evolved sex-specific adaptation strategies to cope with inorganic phosphorus (Pi) limitation. Yet, little is known about the effects of Pi limitation on plant metabolism, particularly in dioecious woody plants. To identify potential gender-specific metabolites appearing in response to Pi limitation in poplars, we studied the metabolic and ionomic responses in the roots and leaves of Populus cathayana Rehd males and females exposed to a 60-day period of Pi deficiency. Besides significant decreases in phosphorus contents in both Pi-deficient roots and leaves, the calcium level decreased significantly and the sulfur content increased significantly in Pi-deficient male roots, while the zinc and ferrum contents increased significantly in Pi-deficient female roots. Inorganic P deficiency caused a smaller change in the abscisic acid content, but a significant increase in the jasmonic acid content was detected in both leaves and roots. Salicylic acid significantly decreased under Pi deficiency in male leaves and female roots. Changes were found in phospholipids and phosphorylated metabolites (e.g., fructose-6-phosphate, glycerol-3-phosphate, glucose-6-phosphate, phosphoric acid and inositol-1-phosphate) in roots and leaves. Both P. cathayana males and females relied on inorganic pyrophosphate-dependent but not on Pi-dependent glycolysis under Pi-deficient conditions. Sex-specific metabolites in leaves were primarily in the category of primary metabolites (e.g., amino acids), while in roots primarily in the category of secondary metabolites (e.g., organic acids) and sugars. The metabolome analysis revealed that sexually different pathways occurred mainly in amino acid metabolism, and the tissue-related differences were in the shikimate pathway and glycolysis. We observed changes in carbon flow, reduced root biomass and increased amino acid contents in P. cathayana males but not in females, which indicated that males have adopted an energy-saving strategy to adapt to Pi deficiency. Thus, this study provides new insights into sex-specific metabolic responses to Pi deficiency.

scholarly journals Are males and females of Populus cathayana differentially sensitive to Cd stress?

2020 ◽  
Vol 393 ◽  
pp. 122411 ◽  
Author(s):  
Miao Liu ◽  
Xingxing Liu ◽  
Jieyu Kang ◽  
Helena Korpelainen ◽  
Chunyang Li
Keyword(s):  
Cd Stress ◽  
Populus Cathayana ◽  
Males And Females

scholarly journals Metabolic activities and molecular investigations of the ameliorative impact of some growth biostimulators on chilling-stressed coriander (Coriandrum sativum L.) plant

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Raifa A. Hassanein ◽  
Omaima S. Hussein ◽  
Amal F. Abdelkader ◽  
Iman A. Farag ◽  
Yousra E. Hassan ◽  
...  
Keyword(s):  
Humic Acid ◽  
Plant Growth ◽  
Yield Components ◽  
Molecular Mechanisms ◽  
Growth Parameters ◽  
Chilling Stress ◽  
Growth Yield ◽  
Growth And Yield ◽  
Whole Plant ◽  
Metabolic Activities

Abstract Background Priming of seed prior chilling is regarded as one of the methods to promote seeds germination, whole plant growth, and yield components. The application of biostimulants was reported as beneficial for protecting many plants from biotic or abiotic stresses. Their value was as important to be involved in improving the growth parameters of plants. Also, they were practiced in the regulation of various metabolic pathways to enhance acclimation and tolerance in coriander against chilling stress. To our knowledge, little is deciphered about the molecular mechanisms underpinning the ameliorative impact of biostimulants in the context of understanding the link and overlap between improved morphological characters, induced metabolic processes, and upregulated gene expression. In this study, the ameliorative effect(s) of potassium silicate, HA, and gamma radiation on acclimation of coriander to tolerate chilling stress was evaluated by integrating the data of growth, yield, physiological and molecular aspects. Results Plant growth, yield components, and metabolic activities were generally diminished in chilling-stressed coriander plants. On the other hand, levels of ABA and soluble sugars were increased. Alleviation treatment by humic acid, followed by silicate and gamma irradiation, has notably promoted plant growth parameters and yield components in chilling-stressed coriander plants. This improvement was concomitant with a significant increase in phytohormones, photosynthetic pigments, carbohydrate contents, antioxidants defense system, and induction of large subunit of RuBisCO enzyme production. The assembly of Toc complex subunits was maintained, and even their expression was stimulated (especially Toc75 and Toc 34) upon alleviation of the chilling stress by applied biostimulators. Collectively, humic acid was the best the element to alleviate the adverse effects of chilling stress on growth and productivity of coriander. Conclusions It could be suggested that the inducing effect of the pretreatments on hormonal balance triggered an increase in IAA + GA3/ABA hormonal ratio. This ratio could be linked and engaged with the protection of cellular metabolic activities from chilling injury against the whole plant life cycle. Therefore, it was speculated that seed priming in humic acid is a powerful technique that can benefit the chilled along with non-chilled plants and sustain the economic importance of coriander plant productivity.

Global warming induces female cuttings of Populus cathayana to allocate more biomass, C and N to aboveground organs than do male cuttings

2010 ◽  
Vol 58 (7) ◽  
pp. 519 ◽  
Author(s):  
Xiao Xu ◽  
Guoquan Peng ◽  
Chengchun Wu ◽  
Qingmin Han
Keyword(s):  
Elevated Temperature ◽  
Biomass Accumulation ◽  
Net Photosynthesis ◽  
Dry Mass ◽  
Control Treatment ◽  
Dioecious Species ◽  
Temperature Regimes ◽  
Populus Cathayana ◽  
C And N ◽  
Males And Females

We investigated differences between the sexes of a dioecious species, Populus cathayana Rehd, in biomass accumulation, biomass allocation, and carbon (C) and nitrogen (N) concentrations under elevated temperature treatments. Cuttings were subjected to three temperature regimes (control, +2°C and +4°C, respectively) in closed-top chambers. Compared with the control treatment, warming significantly increased the net photosynthesis rate, height growth, leaf dry mass, stem dry mass (SM), root dry mass (RM) and total dry mass (TM), and resulted in a higher aboveground : belowground dry mass ratio (AB) in all individuals of both sexes, except in males under the +2°C warming treatment. Furthermore, warming decreased the concentration of C in the stems in both sexes, and increased the concentration of N in the leaves of females, and consequently, resulted in a lower C : N ratio in the leaves of female cuttings than in those of male cuttings. Also, further differences between males and females were detected. In the warming treatments, females exhibited significantly higher values of SM, RM, TM and AB, and lower RM : TM and RM : foliage area ratios than did the males. However, no significant differences in these traits between the two sexes were detected under ambient temperature. Our results indicated that allocation of biomass, and the concentrations of C and N in males and females are greatly affected by an elevated temperature, and that warming benefits females, which accumulate and allocate more biomass to aboveground organs than do the males.

Bronchial stereocilia in the immotile cilia syndrome: A case report

1984 ◽  
Vol 42 ◽  
pp. 52-53
Author(s):  
George Price ◽  
Lizardo Cerezo
Keyword(s):  
Surface Modifications ◽  
Respiratory Epithelium ◽  
Immotile Cilia ◽  
Kartagener's Syndrome ◽  
Membrane Blebs ◽  
Radial Spokes ◽  
Males And Females ◽  
Dynein Arms ◽  
Ultrastructural Finding ◽  
Ultrastructural Findings

Ultrastructural defects of ciliary structure have been known to cause recurrent sino-respiratory infection concurrent with Kartagener's syndrome. (1,2,3) These defects are also known to cause infertility in both males and females. (4) Overall, the defects are defined as the Immotile, or Dyskinetic Cilia Syndrome (DCS). Several ultrastructural findings have been described, including decreased number of cilia, multidirection orientation, fused and compound cilia, membrane blebs, excess matrix in the axoneme, missing outer tubular doublets, translocated doublets, defective radial spokes and dynein arms. A rare but noteworthy ultrastructural finding in DCS is the predominance of microvilli-like structures on the luminal surface of the respiratory epithelium. (5,6) These permanent surface modifications of the apical respiratory epithelium no longer resemble cilia but reflect the ultrastructure of stereocilia, similar to that found in the epidydimal epithelium. Like microvilli, stereocilia are devoid of microtubular ultrastructure in comparison with true cilia.

Reduction of spermatogonia and testosterone in rat testes flown on space lab-3

1986 ◽  
Vol 44 ◽  
pp. 248-249
Author(s):  
Delbert E. Philpott ◽  
W. Sapp ◽  
C. Williams ◽  
T. Fast ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Social Interaction ◽  
Social Status ◽  
Population Size ◽  
Physiological Response ◽  
Social Rank ◽  
Reproductive Function ◽  
Testicular Development ◽  
Organ Weights ◽  
Reproductive Maturation ◽  
Metabolic Activities

Space Lab 3 (SL-3) was flown on Shuttle Challenger providing an opportunity to measure the effect of spaceflight on rat testes. Cannon developed the idea that organisms react to unfavorable conditions with highly integrated metabolic activities. Selye summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Many papers have been published showing the effects of social interaction, crowding, peck order and confinement. Flickinger showed delayed testicular development in subordinate roosters influenced by group numbers, social rank and social status. Christian reported increasing population size in mice resulted in adrenal hypertrophy, inhibition of reproductive maturation and loss of reproductive function in adults. Sex organ weights also declined. Two male dogs were flown on Cosmos 110 for 22 days. Fedorova reported an increase of 30 to 70% atypical spermatozoa consisting of tail curling and/or the absence of a tail.

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