Xueying Wang¹, Yonghong Hu^2,3, Fiza Liaquat⁴, Xianquan Zhang^2,3, Kang Ye^2,3, Jun Qin^2,3,*, Qunlu Liu^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.2, pp. 395-407, 2022, DOI:10.32604/phyton.2022.017981

Abstract Slow growth rate restricts the development and growth of seedlings due to nutrients deficiency or nutrient imbalance. Exponential fertilization can enhance the internal nutrient reserves in seedlings at the nursery-stage and strengthen their resistance to adverse conditions. In this study, nitrogen requirements for producing Hydrangea macrophylla ‘Hanatemari’ that robust seedlings, nutrient dynamics, biomass and growth, was examined utilizing exponential fertilization. The potted seedlings were fertilized with urea under exponential regime at rates of 0.5, 1.5 and 2.0 g nitrogen/plant (EF1, EF2, and EF3), respectively. In addition, an unfertilized group treated with equal volume of deionized water was used as control.… More >

Ping Zhang¹, Zhiyou Kong², Junna Liu¹, Yongjiang Liu¹, Qianchao Wang¹, Xiuju Huan¹, Li Li¹, Yunfeng Jiang³, Peng Qin^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.2, pp. 375-394, 2022, DOI:10.32604/phyton.2022.016358

Abstract Drought is the main abiotic stress that restricts wheat production. The rapid development of sequencing technology and its widespread application to various fields have revealed the structural characteristics and regulation of related genes through gene expression analysis. Here, we studied responses of wheat plants under drought and re-watering conditions, using morphological and physiological indicators. Moreover, a transcriptome analysis was conducted on Jingmai 12, a drought-resistant wheat strain, to explore the mechanism underlying the response of drought-resistant wheat seedlings to drought stress at the transcriptome level. Drought stress caused morphological and physiological changes in both drought-resistant and -sensitive varieties, but to… More >

Mengyuan Dong^#, Rong Sun^#, Qianhui Yang, Lantian Zhang, Yangying Yong, Yunxia Fang, Xian Zhang, Xiaoqin Zhang^*, Dawei Xue^*

Phyton-International Journal of Experimental Botany, Vol.90, No.6, pp. 1589-1598, 2021, DOI:10.32604/phyton.2021.017465

Abstract In recent years, zinc oxide nanoparticles (ZnO NPs) have been widely used as zinc fertilizers and pesticides. The use of ZnO NPs in this way can provide benefits to humans, but also has potential risks. ZnO NPs inevitably enter the environment during their production and use, which affects the ecological environment and crop growth. In order to investigate the phenotype, physiology, and gene expression of barley (Hordeum vulgare L.) seedlings under ZnO NPs stress, the barely cultivars ZJU3 (P21), Golden Promise (GP) and L23 were chosen for study. Different ZnO NPs concentrations were applied to compare the physiological and biochemical… More >

Xinru He, Qiong Ding, Bing Sun, Yongjun Fei, Die Hu^*

Phyton-International Journal of Experimental Botany, Vol.90, No.6, pp. 1673-1684, 2021, DOI:10.32604/phyton.2021.015617

Abstract Four different ratios of river sand, ceramic pellets, vermiculite and perlite (1:1), and field soil were selected as the substrates in this experiment, and four gradient levels of root waterlogging, half waterlogging, full waterlogging and normal were set to investigate the effects of different gradients of waterlogging stress on the root morphology of Taxus chinensis var. mairei seedlings under different substrates. In this study, the root anatomical structure of Taxus chinensis var. mairei under different waterlogging stress was observed by the paraffin section method. The roots of T. chinensis var. mairei were diarch, with no pith and resin canals. There… More >

Md. Parvez Anwar^1,*, Md. Ariful Islam Khalid¹, A. K. M. Mominul Islam¹, Sabina Yeasmin¹, Sharif Ahmed², Adel Hadifa³, Ismail A. Ismail⁴, Akbar Hossain⁵, Ayman EL Sabagh^6,*

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1491-1506, 2021, DOI:10.32604/phyton.2021.015822

Abstract Seed priming has proved to be an effective pre-germination seed invigoration technique for different crops to improve seed and seedling performance under different abiotic stresses. In Bangladesh, winter rice is very often exposed to cold waves just after sowing in the nursery bed resulting in poor seed germination and seedling emergence, yellowish and thin seedlings production, and a very low survival rate. Seed priming may mitigate the cold stress during seed germination and seedling emergence and helps in the quality seedling production of winter rice. To evaluate the efficacy of different seed priming techniques in increasing seedling emergence, growth, vigor… More >

Md. Rezwan Molla^1,2,4, Md. Motiar Rohman^2,*, Mahmuda Binte Monsur², Mirza Hasanuzzaman^3,*, Lutful Hassan⁴

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1425-1443, 2021, DOI:10.32604/phyton.2021.015591

Abstract This study was undertaken to investigate oxidative stress tolerant mechanisms in chilli (Capsicum annuum L.) under drought genotypes through evaluating morphological, physiological, biochemical and stomatal parameters. Twenty genotypes were evaluated for their genetic potential to drought stress tolerant at seedling stage. Thirty days old seedlings were exposed to drought stress induced by stop watering for the following 10 days and rewatering for the following one week as recovery. Based on their survival performance, two tolerant genotypes viz. BD-10906 and BD-109012 and two susceptible genotypes viz. BD-10902 and RT-20 were selected for studying the oxidative stress tolerance mechanism. Drought reduced root… 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

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% in detached leaves that were… More >

Shaoyi Ruan^1,2,3,#, Haowen Luo^1,2,3,#, Xiaoyan Zeng^1,2,3,#, Runhao Wen^1,2,3, Feida Wu^1,2,3, Xiangru Tang^1,2.*

Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1273-1283, 2021, DOI:10.32604/phyton.2021.015610

Abstract Vermicompost is an organic fertilizer contains multiple nutrient elements. However, the application of vermicompost in fragrant rice production is rarely reported. In order to study the effects of vermicompost application on fragrant rice (Oryza sativa L.) seedling performances, present study was conducted with two fragrant rice cultivars and four vermicompost rate treatments (0 (CK), 2.5 (Wo1), 5.0 (Wo2) and 10.0 (Wo3) g kg⁻¹ ). The results showed that vermicompost treatments significantly increased dry weight of fragrant rice seedling by 8.31–32.56% compared with CK. 21.10–59.13% higher net photosynthetic rates and 10.66–59.16% higher chlorophyll contents (chlorophyll a, chlorophyll b and total chlorophyll)… More >

Guoli Deng, Songbei Ying, Sasa Jing, Jun Zhou, Shiyan Lu, Ping Li^*

Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1089-1101, 2021, DOI:10.32604/phyton.2021.016217

Abstract Ambient temperature induces the hypocotyl elongation of seedling, called as thermomorphogenesis. It has been reported that the bHLH transcriptional factor PIF7 acts as the critical component to modulate plant thermomorphogenesis, but the underlying mechanism remains elusive. The phytohormone abscisic acid (ABA) suppresses the hypocotyl elongation under high temperature (HT) stress. As the ABI5 binding protein, AFP2 acts as the negative factor to control ABA signaling. In this study, we first identified AFP2 as the interaction protein of PIF7 in vitro and in vivo. Phenotype analysis revealed that overexpressing AFP2 reduced the hypocotyl elongation, while loss-of-function afp2 mutant showed longer hypocotyl… More >

Shahida Akter, Israt Jahan, Md. Amir Hossain^*, Mohammad Anwar Hossain^*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 949-970, 2021, DOI:10.32604/phyton.2021.014411

Abstract Drought susceptibility and low genetic variability are the major constraints of lentil (Lens culinaris Medik.) production worldwide. Development of an efficient pre-field drought phenotyping technique and identification of diversified drought tolerant lentil genotype(s) are therefore vital and necessary. Two separate experiments were conducted using thirty diverse lentil genotypes to isolate drought tolerant genotype(s) as well as to assess their diversity. In both of the experiments, significant (p ≤ 0.01) variation in genotype (G), treatment (T) and G X T was observed for most of the studied traits. In experiment I, genotypes were examined for drought tolerance at the seedlings stage… More >