Kaiyue Hong^1,2, Yasmina Radani², Waqas Ahmad², Ping Li³, Yuming Luo^1,*

Phyton-International Journal of Experimental Botany, Vol.93, No.1, pp. 45-61, 2024, DOI:10.32604/phyton.2023.046389

Abstract Carbon monoxide (CO) and nitric oxide (NO) are signal molecules that enhance plant adaptation to environmental stimuli. Auxin is an essential phytohormone for plant growth and development. CO and NO play crucial roles in modulating the plant’s response to iron deficiency. Iron deficiency leads to an increase in the activity of heme oxygenase (HO) and the subsequent generation of CO. Additionally, it alters the polar subcellular distribution of Pin-Formed 1 (PIN1) proteins, resulting in enhanced auxin transport. This alteration, in turn, leads to an increase in NO accumulation. Furthermore, iron deficiency enhances the activity of ferric chelate reductase (FCR), as… More >

Limin Yin^#, Chang Liu^#, Zicong Liang, Dajun Liu, Guojun Feng, Zhishan Yan^*, Xiaoxu Yang^*

Phyton-International Journal of Experimental Botany, Vol.92, No.11, pp. 2981-2998, 2023, DOI:10.32604/phyton.2023.043151

Abstract The phenotype of a common bean plant is often closely related to its yield, and the yield of plants with reduced height or poor stem development during growth is low. Mutants serve as an essential gene resource for common bean breeding genetic research. Although model plants and crops are studied to comprehend the molecular mechanisms and genetic basis of plant phenotypes, the molecular mechanism of phenotypic variation in common beans remains underexplored. We here used the mutant ‘nts’ as material for transcriptome sequencing analysis. This mutant was obtained through ⁶⁰Co-γ irradiation from the common bean variety ‘A18’. Differentially expressed genes… More >

Zijian Cao^#, Guoxia Xue^#, Lingfeng Hu, Haoxian Qu, Shuang Liang, Jisen Shi, Jinhui Chen^*, Zhaodong Hao^*

Phyton-International Journal of Experimental Botany, Vol.92, No.8, pp. 2383-2397, 2023, DOI:10.32604/phyton.2023.029845

Abstract The auxin polar transporter, PIN-FORMED 2 (PIN2) plays an important role in root development. However, it remains unclear whether PIN2 genes form two Liriodendron species, L. chinense (LcPIN2) and L. tulipifera (LtPIN2), are both involved in root development and whether and to what extent these two genes diverge in function. Here, we cloned and overexpressed LcPIN2 and LtPIN2 in Arabidopsis thaliana wild-type (WT) and Atpin2 mutant. Phylogenetic and sequence analysis showed a small degree of differentiation between these two Liriodendron PIN2 genes. Tissue-specific gene expression analysis indicated that both Liriodendron PIN2 genes were highly expressed in roots, implying a potential… More >

Shunde Su^1,2,#, Huan Chang^3,#, Xiangyang Kang^1,*, Renhua Zheng^2,*

Phyton-International Journal of Experimental Botany, Vol.92, No.6, pp. 1713-1723, 2023, DOI:10.32604/phyton.2023.027586

Abstract As the reproductive organ of the endangered species Fokienia hodginsii, the size of the cones is a constraint on the reproductive renewal of the population. In this study, the molecular basis of the influence of cone size on F. hodginsii was elucidated by comparing the phenotype, biochemistry, and transcriptome of two cultivars of F. hodginsii (‘FJ431’ and ‘FJ415’). The two cultivars differed significantly in cone size, with FJ431 having a significantly larger cone size and weight than FJ415, 1.32 and 1.90 times that of FJ415, respectively. RNA-Seq analysis of both cultivars retrieved 75,940 genes whose approximate functions were classified as… More >

Shucai Wang^*

Phyton-International Journal of Experimental Botany, Vol.92, No.4, pp. 1153-1160, 2023, DOI:10.32604/phyton.2023.026355

Abstract Light is an environmental signaling, whereas Aux/IAA proteins and Auxin Response Factors (ARFs) are regulators of auxin signalling. Aux/IAA proteins are unstable, and their degradation dependents on 26S ubiquitin-proteasome and is promoted by Auxin. Auxin binds directly to a SCF-type ubiquitin-protein ligase, TIR1, facilitates the interaction between Aux/IAA proteins and TIR1, and then the degradation of Aux/IAA proteins. A few studies have reported that some ARFs are also unstable proteins, and their degradation is also mediated by 26S proteasome. In this study, by using of antibodies recognizing endogenous ARF7 proteins, we found that protein stability of ARF7 was affected by… More >

Huijun Jiang^1,#, Kaien Zhai^3,#, Xiaofan Ye^3,#, Tianwei Hu², Jieming Jiang⁴, Xiaoqiu Dong¹, Weihuai Pan¹, Jianwei Pan², Jianxin Shou^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.12, pp. 2633-2648, 2022, DOI:10.32604/phyton.2022.021474

Abstract Grain filling is a crucial process that affects yield in rice (Oryza sativa L.). Auxin biosynthesis and signaling are closely related to rice yield; therefore, it is important to understand the effects of auxin biosynthesis on rice grain filling to improve crop yield. In this study, we used physiological and molecular strategies to identify the roles of auxin in rice grain filling. Exogenous application of auxin (IAA) or auxin analogues (2, 4-D) to young spikelets and flag leaves improved the seed-setting rate and yield per spike. Furthermore, real-time quantitative PCR assays confirmed that nine members of the OsYUCCA family of… More >

Abraham Lamboro^1,*, Xiao Han¹, Songnan Yang¹, Xueying Li¹, Dan Yao², Baixing Song¹, Jun Zhang^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.12, pp. 2619-2631, 2022, DOI:10.32604/phyton.2022.021404

Abstract Efficient in vitro plantlet regeneration is an important step to successfully transform genes for the improvement of agronomic traits. A combination of 6-benzylaminopurine (BAP) and thidiazuron (TDZ) plant growth regulators was applied to evaluate shoot regeneration capacity whereas α-naphthalene acetic acid (NAA) combination with 6-benzylaminopurine (BAP), and 2, 4-dichlorophenoxyacetic acid (2, 4-D) with 6-benzylaminopurine were tested to optimize root induction for two peanut cultivars. The result showed combination (BAP with TDZ) was found to be effective in promoting shoot. The highest shoot regeneration frequency (93%) was obtained on a medium supplemented with 4 mg/L BAP and 0.5 mg/L TDZ while an average… More >

Elizabeth Carrillo-Flores¹, Jonanci Arreola-Rivera¹, Denní Mariana Pazos-Solís², Moisés Bocanegra-Mondragón², Grisel Fierro-Romero³, Ma. Elena Mellado-Rojas¹, Elda Beltrán-Peña^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.11, pp. 2383-2401, 2022, DOI:10.32604/phyton.2022.021507

Abstract The potential of Plant Growth Promoting Rhizobacteria (PGPR) has been demonstrated in the case of plant inoculation with bacteria of the genus Azospirillum which improves yield. A. brasilense produces a wide variety of molecules, including the natural auxin indole-3-acetic acid (IAA), as well as other phytoregulators. However, several studies have suggested that auxin induces changes in plant development during their interaction with the bacteria. The effects of A. brasilense Sp245 on the development of Arabidopsis thaliana root were investigated to help explain the molecular basis of the interaction. The results obtained showed a decrease in primary root length from the… More >

Lingyan Hu, Haiyan Chen, Guangqun Zhang, Zihao Yu, Kai Yan, Fangdong Zhan, Yongmei He^*

Phyton-International Journal of Experimental Botany, Vol.91, No.9, pp. 1933-1944, 2022, DOI:10.32604/phyton.2022.020041

Abstract Indoleacetic acid (IAA) is an important regulator that plays a crucial role in plant growth and responses to abiotic stresses. In the present study, a sand cultivation experiment was carried out to investigate the effects of IAA at different concentrations (0, 0.01, 0.1, 0.5, 1, and 2.5 mmol/L) on maize growth, root morphology, mineral elements (Ca, Mg) and Cd uptake under 20 mg/kg Cd stress. The results showed that 0.01 mmol/L is the optimal IAA concentration for enhancing the Cd tolerance of maize. Compared with the control treatment, 0.01 mmol/L IAA promoted maize growth, with significant increases in the height,… More >

LIYAN SU^1,2,#, HONG YU^3,#, JIUDONG ZHANG¹, XIAOHONG ZHAO¹, XUAN LIU¹, QIANG LI^1,4,*

BIOCELL, Vol.45, No.4, pp. 1153-1166, 2021, DOI:10.32604/biocell.2021.014499

Abstract Auxin signaling and its components (Auxin/Indole-3-Acetic Acid (Aux/IAA)) are critical for plant growth and development. Here, we performed a genome-wide annotation and identified twenty-one Aux/IAA genes in strawberry (Fragaria vesca). Most FveIAAs were located on chromosomes 1, 2, 4, 5, and 6, while no FveIAAs were found in chromosomes 3 and 7. Phylogenetic analysis divided these genes into nine subfamilies. Most FveIAAs contained the DNA-binding and Aux/IAA domains, as well as motifs I–IV. There were 2–6 exons in the FveIAA genes based on the gene structure analysis. Also, we found that four pairs of FveIAA genes underwent segment duplications. Moreover,… More >