Yifu Liu^1,2, Jiazhen Wang^1,2,*, Yao Xiao¹, Xiongwen Shi¹, Yixia Zeng¹

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1549-1558, 2021, DOI:10.32604/phyton.2021.015557 - 27 May 2021

Abstract The chemical compositions of tea (Camellia sinensis) are affected by numerous factors, such as cultivar, climate, leaf position, and cultivation pattern. However, under the same conditions, the chemical compositions are mainly determined by varieties. Therefore, we investigated the genetic diversity of chemical compositions of tea tree resources in China to screen excellent germplasm resources. Three chemical compositions index (including chlorophyll index, flavonoid index, and anthocyanin index) and the nitrogen balance index of tea leaves were measured in 102 tea germplasms planted in Chinese Tea Plants Improved Variety Germplasm Resources Nursery (CTPIVGRN) by Dualex on April 15 More >

Yuanfen Gao, Tinglan Jiang, Yin Xiang, Xuewu He, Zhen Zhang, Shengjuan Wen, Junjie Zhang^*

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1465-1476, 2021, DOI:10.32604/phyton.2021.014811 - 27 May 2021

Abstract Brassinosteroids participate in many physiological processes in plants; however, their regulatory roles on the activities of the enzymes involved in dark phase of photosynthesis remains elusive. In this study, detached leaves and protoplasts of maize seedlings were treated with epi-brassinolide (EBR) and brassinazole followed by the determination of the contents of chlorophyll (a+b) and soluble sugars, and the activity of dark reaction enzymes and the expression of the relevant genes. The results showed that chlorophyll (a+b) content increased by 7.4% under 0.1 μM EBR treatment for 48 h; furthermore, chlorophyll (a+b) content increased by 34%… More >

Lijuan Kong^1,2, Haiye Yu^1,2, Zhaojia Piao^1,2, Meichen Chen^1,2, Jingmin Dang¹, Lei Zhang^1,2, Yuanyuan Sui^1,2,*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 1015-1030, 2021, DOI:10.32604/phyton.2021.014190 - 30 March 2021

Abstract Haze is mainly caused by the suspended particulate matters in the air, of which the particulate matters pollution harms leaf vegetables. In this paper, oilseed rapes at four different growing periods were investigated in a simulated particulate pollution environment. In combination of hyper-spectral technology and micro examination, the response of hyper-spectral characteristics of the leaf to particulate matters was investigated in-depth. The hyperspectral, chlorophyll content, net photosynthetic rate and stomatal conductance of leaf were obtained. The deposition and adsorption of particulate matters on the leaf were observed by Environmental Scanning Electron Microscope (ESEM). Normalized difference… More >

Abdulkhaliq Alshoaibi^*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 731-745, 2021, DOI:10.32604/phyton.2021.015476 - 30 March 2021

Abstract Seeds of three Saudi pearl millet cultivars (Pennisetum spicatum) from three regions (Madinah, Khulais and Jaizan) were inoculated with arbuscular mycorrhizal fungus Glomus mosseae obtained from the Agriculture Research Center of Giza, Egypt to enhance their salt tolerance. Five different NaCl concentrations (0, 30, 60, 90, and 120 mM) were used for treating cultivars with and without mycorrhiza. Growth rates, chlorophyll content, chlorophyll fluorescence (Fv/Fm), proline content and gas exchange were measured to determine the effect of salinity on these cultivars. The results indicated that compared to cultivars without mycorrhiza, all cultivars with mycorrhiza had enhanced growth and… More >

Yan Li¹, Renquan Huang¹, Jianrong Li¹, Xiaozhen Huang¹, Xiaofang Zeng^1,*, Degang Zhao^1,2,*

Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 111-127, 2021, DOI:10.32604/phyton.2020.013933 - 20 November 2020

Abstract Plant architecture is a vital agronomic trait to control yield in rice (Oryza sativa L.). A dwarf and small seed 1 (dss1) mutant were obtained from the ethyl methanesulfonate (EMS) mutagenized progeny of a Guizhou glutinous landrace cultivar, Lipingzabianhe. The dss1 mutant displayed phenotypes similar to those of brassinosteroid (BR) deficient mutants, such as dwarfing, dark green and rugose erect leaves, small seeds, and loner neck internode panicles with primary branching. In our previous study, the underlying DSS1 gene was isolated, a novel allele of OsDWARF (OsBR6ox) that encodes a cytochrome P450 protein involved in the BR biosynthetic pathway by More >

SHYAM BADU¹, SANJAY PRABHAKAR^1,2, RODERICK MELNIK^1,3,*

BIOCELL, Vol.44, No.3, pp. 279-291, 2020, DOI:10.32604/biocell.2020.010916 - 22 September 2020

Abstract Photosynthesis is a fundamental process in biosciences and biotechnology that influences profoundly the research in other disciplines. In this paper, we focus on the characterization of fundamental components, present in pigment-protein complexes, in terms of their spectroscopic properties such as infrared spectra, nuclear magnetic resonance, as well as nuclear quadrupole resonance, which are of critical importance for many applications. Such components include chlorophylls and bacteriochlorophylls. Based on the density functional theory method, we calculate the main spectroscopic characteristics of these components for the Fenna-Matthews-Olson light-harvesting complex, analyze them and compare them with available experimental results. More >

Yanwei Feng¹, Wen Lei², Rui Gu³, Ping Zhao⁴, Shijun Ni^1,*, Ningfei Lei^3,*

Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 667-679, 2020, DOI:10.32604/phyton.2020.010160 - 22 June 2020

Abstract Water, minerals, nutrients, etc., can be shared by physiological integration among inter-connected ramets of clonal plants. Nitrogen plays an important role in alleviating cadmium (Cd) stress for clonal plants. But how different forms of nitrogen affect growth performance of clonal plants subjected to heterogeneous Cd stress still remains poorly understood. A pot experiment was conducted to investigate the differential effects of ammonium and nitrate on growth performance of Glechoma longituba under heterogeneous Cd stress. In the experiment, parent ramets of Glechoma longituba clonal fragments were respectively supplied with modified Hoagland solution containing 7.5 mM ammonium, 7.5… More >

A. Sattar^1,*, A. Sher^1,*, M. Ijaz¹, M. Irfan², M. Butt¹, T. Abbas¹, S. Hussain², A. Abbas¹, M. S. Ullah³, M. A. Cheema⁴

Phyton-International Journal of Experimental Botany, Vol.88, No.4, pp. 379-388, 2019, DOI:10.32604/phyton.2019.04784

Abstract Application of biochar to agricultural soils is mostly used to improve soil fertility. Experimental treatments were comprised of two factors: i) drought at two level, i.e., 80% and 40% water holding capacity (WHC) which was maintained on gravimetric basis ii) three levels of biochar i.e., control, 2 t ha^-1 and 4 t ha^-1 added to soil. Experimentation was done to examine potential of biochar application to enhance the growth attributes, water relations, photosynthetic pigments and antioxidants activities in maize (Zea mays L.) seedlings. Results of study revealed that biochar application increased the growth qualities (total seedlings biomass,… More >

Dhouha Belhaj Sghaier¹, Insaf Bankaji¹, Sylvia Pedro², Isabel Caçador², Noomene Sleimi^1,*

Phyton-International Journal of Experimental Botany, Vol.88, No.3, pp. 239-252, 2019, DOI:10.32604/phyton.2019.06887

Abstract The lack of knowledge of plant tolerance and differential response to aluminum (Al) encouraged many researchers, in the last decade, to elucidate Al toxicity and tolerance mechanisms. The current study reported the impact of Al, a toxic element with negative effects on plant growth and development, in halophytic plant Tamarix gallica. Plants were subjected to different Al concentrations (0, 200, 500 and 800 μM) with or without NaCl (200 mM) supplementation. Growth, photosynthesis and mineral content were assessed. Al stress had a significant decrease on shoots’ biomass production between 19 to 41%, and a little variation… More >

Abud-Archila M¹, AK Espinosa-Arrioja¹, T González-Soto², VF Gutiérrez-Oliva¹, V Ruíz-Valdiviezo¹, D González-Mendoza², L Rodríguez-Hernández³, FA Gutiérrez-Miceli¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 209-215, 2018, DOI:10.32604/phyton.2018.87.209

Abstract The aim of this investigation was to analyze the effect of vermicompost and phosphate rock on plant growth and biochemical responses of Moringa oleifera exposed to water deficit and waterlogging conditions. Treatments included 152 g of vermicompost (V) and 1.3 g of phosphate rock (PR) added to each cultivation bag. Control was prepared with 2.3 g of urea. All treatments were irrigated under different watering conditions [water deficit: irrigated at 20% water holding capacity (WHC); control (40% WHC) and waterlogging (60% WHC)]. The overall average in plant height was 90, 86 and 68 cm, whereas chlorophyll… More >