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  • Open Access

    ARTICLE

    Alleviation of Drought Stress in Wheat Using Exogenous Ulva prolifera Extract Produced by Enzymatic Hydrolysis

    Feiyu Li1, Siqi Zuo1, Yongzhou Chi1, Chunying Du1, Zhaopeng Shen1, Xihong Han2,3, Xiaohui Wang2,*, Peng Wang1,*

    Journal of Renewable Materials, Vol.8, No.11, pp. 1519-1529, 2020, DOI:10.32604/jrm.2020.011453 - 28 September 2020

    Abstract Drought is one of the major abiotic stresses that affect plant growth and reduce agricultural productivity. Use of algal extract as a biostimulant is gaining increased attention from researchers. This study aimed to investigate the potential of Ulva prolifera extract (UE) as a biostimulant when enzymatically extracted under conditions of water deficit. UE treatments (0.02%, 0.06%, and 0.1%) significantly improved the shoot length, root length, and dry weight of roots after 120 h of drought stress relative to that in treatment with the negative control. An increase in catalase (CAT) and peroxidase (POD) activity was also More >

  • Open Access

    ARTICLE

    Effects of Multi-Stage Continuous Drought on Photosynthetic Characteristics, Yield and Water Use Efficiency of Winter Wheat

    Daoxi Li1,*, Ruitao Lou1, Yanbin Li1, Zepeng Bian1, Ya’nan Zhu2

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 691-703, 2020, DOI:10.32604/phyton.2020.010661 - 22 June 2020

    Abstract A drought event can cause entire crops to fail or yield loss. In order to study the effects of continuous drought on photosynthetic characteristics, yield, and water use efficiency (WUE) of winter wheat (Triticum aestivum L.), the winter wheat variety “Aikang 58” was selected as test material with controlling the water of the pot-planted winter wheat under a mobile rainout shelter. Based on foot planting and safe wintering, winter wheat was evaluated under different drought conditions, including light, moderate and severe drought at the jointing (B), heading (C), and filling (G) stages. The soil water content… More >

  • Open Access

    ARTICLE

    Enhancing Drought Tolerance in Wheat through Improving MorphoPhysiological and Antioxidants Activities of Plants by the Supplementation of Foliar Silicon

    Zahoor Ahmad1,*, Ejaz Ahmad Waraich2, Celaleddin Barutçular1, Akbar Hossain3, Murat Erman4, Fatih ÇIĞ4, Hany Gharib5, Ayman EL Sabagh4, 5, *

    Phyton-International Journal of Experimental Botany, Vol.89, No.3, pp. 529-539, 2020, DOI:10.32604/phyton.2020.09143 - 22 June 2020

    Abstract The main objective of the research is to assess the role of foliar application of silicon (Si) for enhancing the survival ability of wheat under drought stress through improving its morphology, physicochemical and antioxidants activities. Treatments were five doses of Si at the rate of 2, 4, 6 and 8 mM and a control. After completion of seeds germination, pots were divided into four distinct groups at various field capacity (FC) levels, such as 100% FC (well-irrigated condition), 75% FC (slight water deficit), 50% FC (modest water deficit) and 25% FC (severe water deficit stress… More >

  • Open Access

    REVIEW

    Combined Role of ACC Deaminase Producing Bacteria and Biochar on Cereals Productivity under Drought

    Subhan Danish1,2, Muhammad Zafar-ul-Hye1,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.2, pp. 217-227, 2020, DOI:10.32604/phyton.2020.08523 - 22 April 2020

    Abstract Most of the cereal crops are widely cultivated to fulfil the humans food requirements. Under changing climate scenario, the intensity of drought stress is continuously increasing that is adversely affecting the growth and yield of cereal crops. Although the cereals can tolerate moderate drought to some extent, but mostly they are susceptible to severe drought stress. Higher biosynthesis of ethylene under drought stress has been reported. Many scientists observed that inoculation of 1-aminocyclopropane-1-carboxylate (ACC) deaminase producing plant growth promoting rhizobacteria (PGPR) is an efficacious tool to overcome this problem. These PGPR secrete ACC deaminase which… More >

  • Open Access

    ARTICLE

    Genome-Wide Identification of the F-box Gene Family and Expression Analysis under Drought and Salt Stress in Barley

    Lantian Zhang, Siyi Wang, Yuyu Chen, Mengyuan Dong, Yunxia Fang, Xian Zhang, Tao Tong, Ziling Zhang, Junjun Zheng, Dawei Xue*, Xiaoqin Zhang*

    Phyton-International Journal of Experimental Botany, Vol.89, No.2, pp. 229-251, 2020, DOI:10.32604/phyton.2020.10022 - 22 April 2020

    Abstract The F-box protein-encoding gene family plays an essential role in plant stress resistance. In present study, 126 non-redundant F-box genes were identified in barley (Hordeum vulgare L., Hv). The corresponding proteins contained 165– 887 amino acid residues and all were amphiphilic, except 5 proteins. Phylogenetic analysis of F-box protein sequences in barley and stress-related F-box protein sequences in wheat and Arabidopsis thaliana (At) was used to classify barley F-box genes are divided into 9 subfamilies (A–I). A structure-based sequence alignment demonstrated that F-box proteins were highly conserved with a total of 10 conserved motifs. In total, 124 F-box genes were… More >

  • Open Access

    ARTICLE

    Biochar Application Improves the Drought Tolerance in Maize Seedlings

    A. Sattar1,*, A. Sher1,*, 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 >

  • Open Access

    ARTICLE

    Identification of phytohormone changes and its related genes under abiotic stresses in transgenic rice

    Mohammad UBAIDILLAH1,2, Miswar FAPERTA1,2, Kyung-Min KIM1

    BIOCELL, Vol.43, No.3, pp. 215-224, 2019, DOI:10.32604/biocell.2019.07549

    Abstract Abiotic stresses, such as drought and salinity, adversely affect plant growth and productivity. Comparison between non transgenic and transgenic rice harboring CaMsrB2 gene, which induces tolerance to abiotic stress, is important to observe response of gene under abiotic stress. Phytohormone showed a tendency to increase under the drought stress or salinity stress in the transgenic plant. RT-PCR analysis showed that gene expression and phytohormone levels under abiotic stress, to be closely related. The CaMsrB2 gene is related to the expression of JA and ABA hormones. Therefore, the level of expression of these genes and hormones was More >

  • Open Access

    ARTICLE

    Physiological response of early and late maturity oilseed rape cultivars to drought under two climate conditions

    Jabbari H1, M Gholamhosseini1, M Naeemi2, A Nasiri3

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 133-142, 2018, DOI:10.32604/phyton.2018.87.133

    Abstract Two experiments were performed in 2011-2012 to investigate the response of three oilseed rape cultivars to drought stress, grown under two climate conditions in Iran (cold and hot climates). The experiments were conducted using a randomized complete-block design arranged in split-plot with three replicates. The irrigation treatments (FI: full irrigation; WIF: withholding irrigation at flowering stage, and WIS: withholding irrigation at the silique formation stage until physiological maturity) were allocated to main plots, whereas subplots consisted of the oilseed rape cultivars: early maturating (GKH2005), relatively late maturing (Opera) and late maturing (Okapi). Drought caused a… More >

  • Open Access

    ARTICLE

    Responses of C:N:P stoichiometry of plants from a Hulunbuir grassland to salt stress, drought and nitrogen addition

    Wang XG1, Wuyunna1*, CA Busso2, YT Song1, FJ Zhang1, GW Huo1

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 123-132, 2018, DOI:10.32604/phyton.2018.87.123

    Abstract Chemical elements, such as carbon (C), nitrogen (N) and phosphorus (P), are major limiting nutrients in arid and semiarid grasslands and their stoichiometry (C:N:P) is a very important ratio to determine. In addition, it is critical to understand how plant stoichiometry responds to multiple environmental factors at the species level. In this study, we conducted a greenhouse experiment to investigate the effects of salt stress (4 g NaCl/kg soil), drought (35% of the soil water holding capacity) and N addition (10 g N/m2), as well as their interactions, on C, N and P concentrations and C:N:P… More >

  • Open Access

    ARTICLE

    Genetic analysis for quantitative traits in bread wheat exposed to irrigated and drought stress conditions

    Ataei R1, M Gholamhoseini1, M Kamalizadeh2

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 228-235, 2017, DOI:10.32604/phyton.2017.86.228

    Abstract Understanding the genetic control of traits associated with yield helps breeders to utilize their germplasm in a more efficient and consistent manner and to make good choices in breeding programs. The current study was carried out to study the genetic control of some quantitative traits in bread wheat (Triticum aestivum L.) and to examine plant responses under full irrigation and drought stress conditions. For this purpose, six generations derived from a cross between two lines (Bezostaya as tolerant parent and 518 as a susceptible parent) were evaluated for grain yield (GY), plant height (PH), peduncle (PL)… More >

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