Flavonoids modify root growth and modulate expression of SHORT-ROOT and HD-ZIP III

Franco, Danilo Miralha; Silva, Eder Marques; Saldanha, Luiz Leonardo; Adachi, Sérgio Akira; Schley, Thayssa Rabelo; Rodrigues, Tatiane Maria; Dokkedal, Anne Lígia; Nogueira, Fábio Tebaldi Silveira; Almeida, Luiz Fernando Rolim de

doi:10.1016/j.jplph.2015.09.009

Cited by 44 publications

(35 citation statements)

References 33 publications

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“…Additional evidences showed that the EgHOX1 gene in oil palm was up-regulated by exogenous auxin and down-regulated by light [ 29 ]. HD-Zip III proteins were reported to impact vascular development, shoot and apical meristem formation, morph-physiological changes in roots and auxin transport [ 9 , 30 ]. C LV3 and HD-Zip III pathways distinctively regulated meristem activity [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)

Yue

Shu

Wang

et al. 2018

Genes

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The homeodomain-leucine zipper (HD-Zip) gene family, as plant-specific transcription factors, plays an important role in plant development and growth as well as in the response to diverse stresses. Although HD-Zip genes have been extensively studied in many plants, they had not yet been studied in wheat, especially those involved in response to abiotic stresses. In this study, 46 wheat HD-Zip genes were identified using a genome-wide search method. Phylogenetic analysis classified these genes into four groups, numbered 4, 5, 17 and 20 respectively. In total, only three genes with A, B and D homoeologous copies were identified. Furthermore, the gene interaction networks found that the TaHDZ genes played a critical role in the regulatory pathway of organ development and osmotic stress. Finally, the expression profiles of the wheat HD-Zips in different tissues and under various abiotic stresses were investigated using the available RNA sequencing (RNA-Seq) data and then validated by quantitative real-time polymerase chain reaction (qRT-PCR) to obtain the tissue-specific and stress-responsive candidates. This study systematically identifies the HD-Zip gene family in wheat at the genome-wide level, providing important candidates for further functional analysis and contributing to the better understanding of the molecular basis of development and stress tolerance in wheat.

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Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)

Yue

Shu

Wang

et al. 2018

Genes

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“…Almeida et al (2008) found that extracts from Leonurus sibiricus leaves a ected the germination and root growth of Cucumis sativus; however, a greater e ect was seen on root growth than on germination. Franco et al (2015a) showed that C. langsdor i leaf extract had an inhibitory e ect on primary roots caused by avonoid glycosides, and these compounds altered the pattern of expression of the SHORT-ROOT and HD-ZIP III transcription factor gene families and caused morphophysiological alterations in sorghum roots. us, the higher phytotoxic e ect on root growth is also a re ection of altered gene expression of genes related to the development of root tissue.…”

Section: Discussionmentioning

confidence: 99%

“…Methanol extracts of C. langsdorffi i leaves also decreased GSI and root growth in sorghum seedlings, promoted secondary root development, and induced the expression of diff erent genes associated with root tissue formation (e.g., SHR, members of the HD-ZIP III family, and miR166) (Franco et al 2015a). The leaves of C. langsdorffi i contain fl avonoid glycosides, particularly quercetin-3-O-α-rhamnoside and kaempferol-3-O-α-rhamnoside (Sousa et al 2012), which suggests that leaf fl avonoids may be active allelochemicals in this species.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation in allelopathic potential of the leaves of Copaifera langsdorffii Desf.

et al. 2016

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“…Germination was evaluated daily for seven days to obtain the germination speed index (GSI) according to Franco et al (2015) and percentage of germination according to Benincasa (1988). The seedlings were considered germinated when they had a radicle protrusion of 2 mm and were classified as normal or abnormal according to the Rules for Seed Analysis (BRASIL, 2009).…”

Section: Lactuca Sativa L and Bidens Pilosa L Seed Germination Testsmentioning

confidence: 99%

In vitro phytotoxicity of Mikania laevigata Schultz Bip. ex Baker extracts on Lactuca sativa L. and Bidens pilosa L.

Santos

Gonçalves

2020

Biotemas

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Extratos vegetais possuem metabólitos secundários que podem atuar como bioherbicidas com a vantagem de promoverem menores riscos ao ambiente. Mikania laevigata pertence à família Asteraceae e possui a cumarina 1,2-benzopirona como marcador químico, capaz de inibir ou estimular a germinação e crescimento de plantas adjacentes. Diante do exposto, objetivou-se avaliar a fitotoxicidade dos extratos aquoso e etanólico de M. laevigata sobre Lactuca sativa (alface) e Bidens pilosa (picão preto). Foram testadas cinco concentrações (0,1; 1,0; 1,5; 2,0 e 3,0 mg.mL-1) dos extratos, aquoso e etanólico, em experimentos separados, e água destilada como controle. Para isso, foram avaliados a porcentagem de germinação, o índice de velocidade de germinação, o crescimento inicial e os teores de peróxido de hidrogênio (H2O2) e do malonaldeido (MDA). Na presença do extrato etanólico, as espécies (alface e picão preto) reduziram 85 e 90% da germinação, respectivamente. O comprimento da radícula, na menor concentração dos extratos, não foi afetado. Entretanto, na concentração de 2,0 mg.mL-1, as reduções foram de 85%, para alface, e 65%, para picão preto. O aumento do teor de H2O2 foi dose dependente, ou seja, conforme o aumento da concentração dos extratos maior a produção de peróxido, seguido do aumento do MDA para alface e picão preto. As plântulas cultivadas na concentração de 3 mg.mL-1 do extrato etanólico sofreram necrose, impossibilitando as análises subsequentes. Os extratos da M. laeviagata nas concentrações 2,0 e 3,0 mg.mL-1 demonstraram fitointoxicação com aumento do estresse oxidativo nas espécies alface e picão preto.

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Flavonoids modify root growth and modulate expression of SHORT-ROOT and HD-ZIP III

Cited by 44 publications

References 33 publications

Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)

Genome-Wide Identification and Expression Analysis of the HD-Zip Gene Family in Wheat (Triticum aestivum L.)

Seasonal variation in allelopathic potential of the leaves of Copaifera langsdorffii Desf.

In vitro phytotoxicity of Mikania laevigata Schultz Bip. ex Baker extracts on Lactuca sativa L. and Bidens pilosa L.

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