Exogenous ethylene reduces growth via alterations in central metabolism and cell wall composition in tomato (Solanum lycopersicum)

Nascimento, Vitor L.; Pereira, Airton dos Reis; Siqueira, João Antônio; Pereira, Aurelio S; Silva, Victor F; Costa, Lucas Cavalcante da; Ribeiro, Dimas M.; Zsögön, Agustín; Nunes‐Nesi, Adriano; Araújo, Wagner L.

doi:10.1016/j.jplph.2021.153460

Cited by 8 publications

(3 citation statements)

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“…Recently, Wang et al (2020) and Wongjunta et al (2021) observed that STS inhibited ET production in lotus leaves and orchid flowers by suppressing the expression of ACS and the activities of ACS and ACO enzymes. Moreover, ethephon-enhanced ET production, ACS and ACO expression, and ACS and ACO activities have also been reported in previous studies (Imsabai et al, 2010;Lee et al, 2021;Nascimento et al, 2021;Wongjunta et al, 2021). Taken together, these findings showed that ethephon completely prevented stem bending in the three different cultivars of snapdragon cut flowers and that STS significantly stimulated stem bending.…”

Section: Discussionsupporting

confidence: 87%

Ethylene Acts as a Negative Regulator of the Stem-Bending Mechanism of Different Cut Snapdragon Cultivars

et al. 2021

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This study investigated whether ethylene is involved in the stem-bending mechanism of three different snapdragon cultivars ‘Asrit Red’, ‘Asrit Yellow’, and ‘Merryred Pink’, by treating their cut stems with an ethylene-releasing compound (ethephon), an ethylene-action inhibitor [silver thiosulfate (STS)], and distilled water (as the control). Ethephon completely prevented stem bending in all cultivars, whereas STS exhibited a higher bending rate compared with the control. The bending rates were influenced by several factors, such as the degree of stem curvature, relative shoot elongation, ethylene production, and lignin content, indicating their involvement in the stem-bending mechanism of the cultivars. The analysis of the expression of genes involved in the ethylene and lignin biosynthetic pathways also supported the importance of lignin and ethylene in the stem-bending mechanism. Taken together, as ethephon completely prevented stem bending of the three snapdragon cultivars, this study suggested that ethylene acts as a negative regulator of the stem-bending mechanism of snapdragon cultivars, and the information will be valuable for the prevention of stem bending in other commercially important ornamental flowers.

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Section: Discussionsupporting

confidence: 87%

Ethylene Acts as a Negative Regulator of the Stem-Bending Mechanism of Different Cut Snapdragon Cultivars

et al. 2021

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“…In this study, SNP did not significantly promote lignin content compared to the control, while ethephon significantly promoted it. The role of ethephon in lignin accumulation via triggering lignin biosynthetic genes ( PAL and 4CL ) and improvement of resistance to stem breakage has been reported in many plant species [ 13 , 18 – 23 ]. Therefore, the higher lignin content in the ethephon-treated stems than in other treatments could be due to the accumulation of higher ethylene in the former than in the latter.…”

Section: Discussionmentioning

confidence: 99%

Characterizing the effects of different chemicals on stem bending of cut snapdragon flower

et al. 2022

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Background This study investigated the effects of ethylene release compounds (ethephon), ethylene-action inhibitors (silver thiosulfate: STS), and nitric oxide donor (sodium nitroprusside: SNP) on stem bending of snapdragon flowers. Moreover, the effects of plant growth supplements [6-benzyladenine (BA), gibberellic acid 3 (GA3), and calcium chloride (CaCl2)] on the stem bending were also extensively investigated. Results Ethephon completely prevented stem bending until 9 days after treatment (9 DAT). STS exhibited the highest bending rate, while SNP did not significantly affect the bending compared to the controls. The bending results were associated with the results of stem curvature, relative shoot elongation, ethylene production, and lignin content, that are involved in the stem bending mechanism. This was proven by the expression analysis of genes involved in ethylene and lignin biosynthetic pathways. The addition of plant growth supplements slightly or significantly delayed stem bending in the treatments (control, SNP, and STS) and significantly reduced petal senescence in ethephon at 9 DAT. Conclusion These results show the preventive role of ethephon in the stem bending of cut snapdragon. Moreover, the combination of ethephon with supplements also provided information that could guide the development of strategies to delay stem bending in other cut flowers that undergo serious bending during a short vase life.

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“…Isto ponto, deve-se ter em mente também que os valores máximos de gs observados em S. sessiliflorum foram de 0,22 mol H2O m -1 s -1 ao passo que resultados encontrados para S. lycopersicum indicam valores próximos (0,15 e 0.27 mol H2O m -1 s -1NASCIMENTO et al, 2021). Em adição, EROs podem ser geradas em função de desbalanço no comportamento dos parâmetros relacionados a eficiência fotoquímica do PSII.…”

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Respostas bioquímicas e ecofisiológicas em plantas de cubiu (Solanum sessiliflorum) submetidas a limitação hídrica

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As mudanças climáticas, cada vez mais explícitas, trazem sérios riscos a agricultura em geral, uma vez que frequentemente são registrados aumentos de temperaturas globais e diminuição, ou até mesmo ausências, de períodos chuvosos. Dessa forma, a busca por materiais que atendam tanto a necessidade de alta produção como também apresente tolerância a situações ambientais desfavoráveis ao desenvolvimento vegetal é cada vez mais demandadas para inserção na agricultura. Solanum sessiliflorum é uma planta herbácea que possui sistema radicular bem desenvolvido e frutos de características mescladas de tomate e berinjela e com grande potencial para exploração comercial. Outra característica interessante de plantas dessa espécie é que sua base genética é ampla, com grande rusticidade e ainda pouco estudada. Dessa forma, S. sessiliflorum é uma excelente candidata para busca de genes que possam ser utilizadas no melhoramento de Solanaceaes já consagradas na agricultura ou até mesmo sua própria inserção no mercado. Por essas e outras características, surgiu o interesse de estudar essa espécie que pode servir como rota de escape para driblar a homeostase imposta por sucessivos ciclos de melhoramento genético vegetal em plantas agrícolas, em especial as Solanaceaes. Sendo assim, este trabalho buscou caracterizar as respostas ecofisiológicas e bioquímicas de S. sessiliflorum submetidas a limitação hídrica e assim ampliar o entendimento do comportamento da cultura em situação de estresse abiótico e futuramente utilizar essas informações em programas de melhoramento e biotecnológicos. A partir das análises realizadas constatou-se que a limitação hídrica afeta processos essenciais como trocas gasosas e metabolismo, alguns em maior magnitude, refletindo principalmente em retardo no desenvolvimento e menor crescimento. No entanto, verificou-se que a reidratação dos tecidos vegetais levou a respostas positivas aos parâmetros avaliados, podendo indicar a não ocorrência de danos severos durante o período de limitação hídrica.Palavras-Chave: Déficit Hídrico. Solanaceae. Trocas gasosas. Metabolismo primário.

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Exogenous ethylene reduces growth via alterations in central metabolism and cell wall composition in tomato (Solanum lycopersicum)

Cited by 8 publications

References 83 publications

Ethylene Acts as a Negative Regulator of the Stem-Bending Mechanism of Different Cut Snapdragon Cultivars

Ethylene Acts as a Negative Regulator of the Stem-Bending Mechanism of Different Cut Snapdragon Cultivars

Characterizing the effects of different chemicals on stem bending of cut snapdragon flower

Respostas bioquímicas e ecofisiológicas em plantas de cubiu (Solanum sessiliflorum) submetidas a limitação hídrica

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