Differential tolerance to water deficit in two açaí (Euterpe oleracea Mart.) plant materials

Silvestre, Walter Vellasco Duarte; Silva, Priscilla Andrade; Palheta, Lenilson Ferreira; Neto, C. F. Oliveira; Souza, Rodrigo Otávio Rodrigues de Melo; Festucci-Buselli, Reginaldo Alves; Pinheiro, Hugo Alves

doi:10.1007/s11738-016-2301-9

Cited by 26 publications

(14 citation statements)

References 50 publications

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“…As with advancement in crop age, leaf water potential decreases under drought stress, and free accumulation of proline occurs. It is believed that proline acts as an osmolyte and protects the plant against low water potential by maintaining osmotic regulation in plant organs (Kabbadj et al, 2017;Silvestre et al, 2017). In addition to this, proline also plays a major role as an electron receptor and may promote damage repair ability in the plant by increasing antioxidant activity during drought stress (Yaish, 2015).…”

Section: Resultsmentioning

confidence: 99%

Morphophysiological and biochemical response of mungbean [<i>Vigna radiata</i> (L.) Wilczek] varieties at different developmental stages under drought stress

Bangar¹,

Chaudhury²,

Tiwari³

et al. 2019

Turk J Biol

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The present study was conducted to assess the morphophysiological and biochemical responses during different developmental stages in mungbean varieties subjected to drought stress, and to screen the varieties for drought tolerance. A field experiment was performed according to a completely randomized design on 25 mungbean varieties with 3 replicates per variety. Stress treatment was applied at 3 levels: control (no stress), vegetative stage (25 days after sowing), and reproductive stage (35 days after sowing). According to combined analysis of variance, there were significant effects from drought stress on relative water content (RWC), membrane stability index (MSI), protein and proline content of leaves, leaf area, plant height, and yield traits. MSI, RWC, protein content, leaf area, plant height, and yield traits were decreased during drought stress, while proline content was increased under drought stress conditions. The results showed that the vegetative stage was more sensitive to drought stress, which was further supported by correlation analysis. Taken together, Vigna sublobata, MCV-1, PLM-32, LGG-407, LGG-450, TM-96-2, and Sattya varieties were identified as drought tolerant as they maintained the higher values of RWC, MSI, protein, proline content, leaf area, plant height, and yield traits. These varieties could be used in breeding programs for better physiological drought tolerance traits.

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Section: Resultsmentioning

confidence: 99%

Morphophysiological and biochemical response of mungbean [<i>Vigna radiata</i> (L.) Wilczek] varieties at different developmental stages under drought stress

Bangar¹,

Chaudhury²,

Tiwari³

et al. 2019

Turk J Biol

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“…To a certain extent, the level of chlorophyll content can reflect the photosynthetic capacity of leaves. If the stability of chlorophyll content is maintained or increased under conditions of moderate drought, the plant can survive and grow under these adverse conditions[ 57 , 58 ]. Our experiment shows that chlorophyll content first decreased and then increased in both the C3 and G4 cultivars during drought stress.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome analysis of the tea oil camellia (Camellia oleifera) reveals candidate drought stress genes

Dong

Wu²,

WenHong

et al. 2017

PLoS ONE

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BackgroundThe tea-oil camellia (Camellia oleifera) is the most important oil plant in southern China, and has a strong resistance to drought and barren soil. Understanding the molecular mechanisms of drought tolerance would greatly promote its cultivation and molecular breeding.ResultsIn total, we obtained 76,585 unigenes with an average length of 810 bp and an N50 of 1,092 bp. We mapped all the unigenes to the NCBI ‘nr’ (non-redundant), SwissProt, KEGG, and clusters of orthologous groups (COG) databases, where 52,531 (68.6%) unigenes were functionally annotated. According to the annotation, 46,171 (60.8%) unigenes belong to 338 KEGG pathways. We identified a series of unigenes that are related to the synthesis and regulation of abscisic acid (ABA), the activity of protective enzymes, vitamin B6 metabolism, the metabolism of osmolytes, and pathways related to the biosynthesis of secondary metabolites. After exposed to drought for 12 hours, the number of differentially-expressed genes (DEGs) between treated plants and control plants increased in the G4 cultivar, while there was no significant increase in the drought-tolerant C3 cultivar. DEGs associated with drought stress responsive pathways were identified by KEGG pathway enrichment analysis. Moreover, we found 789 DEGs related to transcription factors. Finally, according to the results of qRT-PCR, the expression levels of the 20 unigenes tested were consistent with the results of next-generation sequencing.ConclusionsIn the present study, we identified a large set of cDNA unigenes from C. oleifera annotated using public databases. Further studies of DEGs involved in metabolic pathways related to drought stress and transcription will facilitate the discovery of novel genes involved in resistance to drought stress in this commercially important plant.

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“…In addition, stomatal sensitivity to VPD does not change in plants grown in high [CO 2 ] (Medlyn et al 2001). Lower photosynthetic capacity under drought conditions has been reported for other palm species (Oliveira et al 2002;Gomes et al 2008;Suresh et al 2010;Passos et al 2009;Silva et al 2017;Silvestre et al 2017). However, unlike most palms, macauba palm is naturally found in environments characterized by seasonal drought and high temperatures (Pires et al 2013) and therefore is able to adjust to, and recover from, water stress (Mota & Cano 2016).…”

Section: Discussionmentioning

confidence: 93%

Increased atmospheric CO2 changes the photosynthetic responses of Acrocomia aculeata (Arecaceae) to drought

2019

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Water availability is the main factor that explains current patterns of palm abundance. However, the interaction between water stress and increasing atmospheric CO 2 concentrations caused by climatic change and its effects on palm physiology remain poorly known. Macauba palm is a widespread Neotropical species commonly found in ecosystems subjected to seasonal drought and has potential use in oil production. The present work investigated the influence of increased CO 2 concentrations on photosynthetic responses to drought in macauba palm plants. Exposure to increased CO 2 concentrations led to up-regulation of photosynthesis through higher stomatal conductance and improved light and water use efficiency. Macauba palm plants under water stress, irrespective of CO 2 concentration, were able to maintain constant levels of proline and chlorophyll, while preventing oxidative damage. Plants grown at higher CO 2 concentrations were more capable of recovering from drought due to higher Rubisco carboxylation rate (Vc max) and electron transport rate (J max), which prevented a reduction in total dry mass at the end of the stress period. Stomatal control of photosynthesis, coupled with the prevention of severe damage under stress, would allow efficient biomass production by the macauba palm under future scenarios of climate change.

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Differential tolerance to water deficit in two açaí (Euterpe oleracea Mart.) plant materials

Cited by 26 publications

References 50 publications

Morphophysiological and biochemical response of mungbean [<i>Vigna radiata</i> (L.) Wilczek] varieties at different developmental stages under drought stress

Morphophysiological and biochemical response of mungbean [<i>Vigna radiata</i> (L.) Wilczek] varieties at different developmental stages under drought stress

Transcriptome analysis of the tea oil camellia (Camellia oleifera) reveals candidate drought stress genes

Increased atmospheric CO2 changes the photosynthetic responses of Acrocomia aculeata (Arecaceae) to drought

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