Silicon as an attenuator of salt stress in Brachiaria brizantha ‘MG5’

Silva, Maria Isabel Leite da; Nascimento, Willian Gonçalves do; Rodrigues, Carlos Ribeiro; Silva, Maria Alice Vasconcelos da; Soares, Géssica Solanna Calado

doi:10.5935/1806-6690.20180015

Cited by 1 publication

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“…2b) contents. Silicon can reestablish the activity of the photosynthetic apparatus by activation of ROSmetabolizing enzymes (Sivanesan et al 2011), indicating the protective role of Si against membrane damage and improved the chloroplast structure (Abdalla 2011;Silva et al 2018).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, Si has been shown to be able to improve early growth and establishment of plants under stressful conditions through increasing antioxidant enzymes, photosynthetic capacity and low transpiration coefficient (Sivanesan et al 2011;Imtiaz et al 2016). However, few studies have investigated the use of Si with emphasis on ROS generation and activation of antioxidant defense system in plants under stressful-salt conditions (Coskun et al 2016;Silva et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Salt stress alleviation by seed priming with silicon in lettuce seedlings: an approach based on enhancing antioxidant responses

et al. 2020

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Seed germination and seedling growth are the stages most sensitive to salt stress, which can induce ion-specific effects and oxidative stress. Although silicon (Si) has been known to improve plant defense systems against stressful-conditions, little is known about seed priming with Si and mechanisms of Si-mediated alleviation of salt stress in seedlings. To further the modulation of salt-stress responses and their relation with Si, seed priming with calcium silicate (0, 0.05 and 0.1 mM Ca 2 SiO 4) was used in lettuce seeds to improve seed germination and tolerance on subsequent salt-stress exposure (0 and 50 mM NaCl). The effect of Si-priming was assessed on germination, germination rate index and mean germination time and survival of seedlings in salt-stressful conditions supported by biochemical approach involving antioxidant responses. Overall results indicated that Si plays a role in alleviating the negative effects of salt stress by improving germination performance and displayed increased SOD, CAT and GR activities and reduced malondialdehyde and H 2 O 2 contents. Thus, our findings demonstrate that seed-priming with Si is an efficient management technique that can be used to alleviate deleterious effects of salt-stressful on germination of lettuce seeds and enhance salt tolerance of seedlings due the increased activity of ROS-scavenging enzymes.

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Section: Resultsmentioning

confidence: 99%