Brittle leaf disease induces an oxidative stress and decreases the expression of manganese-related genes in date palm (Phoenix dactylifera L.)

Saidi, Mohammed Najib; Jbir, Rania; Ghorbel, Imen; Namsi, Ahmed; Drira, Noureddine; Gargouri-Bouzid, Radhia

doi:10.1016/j.plaphy.2011.09.016

Cited by 18 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, O 2 − content increased by about threefold in GI compared to CK, indicating a serious damage in A. selengensis caused by G. artemisiae infection (Figure 6D). As another toxic byproduct of ROS metabolism, MDA significantly increased in GI, which was consistent with that in roots of brittle leaf disease-affected date palm (Phoenix dactylifera L.) (Saidi et al, 2012). Increased SOD activity has been pinpointed as the key ROS scavenger in response to Erwinia amylovora in pear (Pyrus communis L.) (Azarabadi et al, 2017).…”

Section: Discussionsupporting

confidence: 62%

Identification of Golovinomyces artemisiae Causing Powdery Mildew, Changes in Chlorophyll Fluorescence Parameters, and Antioxidant Levels in Artemisia selengensis

et al. 2022

View full text Add to dashboard Cite

Artemisia selengensis Turcz. is a valuable edible and medicinal vegetable crop widely cultivated in Northeast China. Powdery mildew (PM) disease occurs during field and greenhouse cultivation, resulting in production losses and quality deterioration. The pathogen in A. selengensis was Golovinomyces artemisiae identified using optical microscopic and scanning electron microscopic observations, morphological identification, and molecular biological analyses. Parameters of chlorophyll fluorescence (ChlF) and antioxidant system responses as well as callose and lignin contents in A. selengensis were analyzed with inoculating G. artemisiae. Obvious of PM-infected leaves were confirmed with significantly lower values in electron transport rate (ETR), non-photochemical quenching (NPQ), photochemical quenching (qP), and actual photochemical efficiency [Y(II)], but higher values in non-adjusting energy dissipation yield [Y(NO)], supposed that maximal photosystem II quantum yield (Fv/Fm) value and images could be used to monitor PM degree on infectedA. selengensis. In addition, malondialdehyde (MDA), superoxide anion (O2–), callose, lignin contents, and peroxidase (POD) activity increased, while superoxide dismutase (SOD) activity, catalase (CAT) activity, and ascorbic acid (AsA) content decreased significantly in infected leaves compared to mock-inoculated leaves, indicated that lignin and protective enzymes are the key indicators for detecting PM resistant in A. selengensis. These results suggest that PM caused by G. artemisiae disrupted the photosynthetic capacity and induced imbalance of antioxidant system inA. selengensis. The findings were of great significance for designing a feasible approach to effectively prevent and control the PM disease in A. selengensis as well as in other vegetable crops.

show abstract

Section: Discussionsupporting

confidence: 62%

Identification of Golovinomyces artemisiae Causing Powdery Mildew, Changes in Chlorophyll Fluorescence Parameters, and Antioxidant Levels in Artemisia selengensis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Additionally, Todorov et al (2003a) revealed that upper rosette leaves of Arabidopsis thaliana are characterised by lower activity of Chlase and higher amounts of chlorophylls in relation to the inferior ones. It should be underlined that many authors reported an elevated activity of Chlase in plants subjected to a wide spectrum of environmental stressors such as water or manganese deficiency (Majumdar et al, 1991;Saidi et al, 2012), heavy metal exposure (Mihailovic et al, 2008), low and high temperature stress (Johnson-Flanagan & McLachlan, 1990;Todorov et al, 2003b), aphid infestation (Ciepiela et al, 2005), and phytopathogenic infections and wounding (Stangarlin & Pascholati, 2000;Kariola et al, 2005). Interestingly, Todorov et al (2003a) demonstrated higher Chlase activity in leaves of the ethylene-insensitive mutant (eti5) of A. thaliana when compared to the wild-type plants.…”

Section: Introductionmentioning

confidence: 99%

Biochemical characterisation of chlorophyllase from leaves of selected Prunus species--a comparative study.

Sytykiewicz

Sprawka²,

Czerniewicz³

et al. 2013

Acta Biochim Pol

View full text Add to dashboard Cite

Despite senescence-induced chlorophyll depletion in plants has been widely studied, the enzymatic background of this physiologically regulated process still remains highly unclear. The purpose of this study was to determine selected biochemical properties of partially purified fractions of chlorophyllase (Chlase, chlorophyll chlorophyllido-hydrolase, EC 3.1.1.14) from leaves of three Prunus species: bird cherry (Prunus padus L.), European plum (Prunus domestica L.), and sour cherry (Prunus cerasus L.). Secondarily, this report was aimed at comparing seasonal dynamics of Chlase activity and chlorophyll a (Chl a) content within investigated plant systems. Molecular weight of native Chlase F1 has been estimated at 90 kDa (bird cherry) and approximately 100 kDa (European plum and sour cherry), whereas molecular mass of Chlase F2 varied from 35 kDa (European plum) to 60 kDa (sour cherry). Furthermore, enzyme fractions possessed similar optimal pH values ranging from 7.6 to 8.0. It was found that among a broad panel of tested metal ions, Hg(+2), Fe(+2), and Cu(+2) cations showed the most pronounced inhibitory effect on the activity of Chlase. In contrast, the presence of Mg(+2) ions influenced a subtle stimulation of the enzymatic activity. Importantly, although Chlase activity was negatively correlated with the amount of Chl a in leaves of examined Prunus species, detailed comparative analyses revealed an incidental decrement of enzymatic activity in early or moderately senescing leaves. It provides evidence that foliar Chlase is not the only enzyme involved in autumnal chlorophyll breakdown and further in-depth studies elucidating this catabolic process are required.

show abstract

“…The genes associated with stress response, metabolism, protein synthesis, and signal transduction were found to be specifically up-regulated in BLD-affected trees. Later, through RT-PCR analysis, Saidi et al (2012) showed that the transcripts of MnSOD decreased in affected leaves and roots, unlike the transcripts of FeSOD and Cu/Zn-SOD, whose expression increased in these tissues, revealing that BLD decreases the expression of manganese-related genes in date palm trees. To understand the molecular basis of red palm weevil ( Rhynchophorus ferrugineus Olivier) resistance in Phoenix canariensis , Giovino et al (2015) carried out deep transcriptome analysis in leaves of healthy and infested trees at two stages (middle and late infestation) and identified 54 genes that were differentially regulated during the middle stage in response to RPW infestation ( Table 3 ).…”

Section: Date Palm Genomicsmentioning

confidence: 99%

Recent advances in date palm genomics: A comprehensive review

et al. 2022

View full text Add to dashboard Cite

As one of the oldest fruit trees of the Arabian peninsula, other Middle-Eastern countries, and also North Africa, the date palm (Phoenix dactylifera L.), is highly significant for the economy of the region. Listed as part of UNESCO’s Intangible Cultural Heritage of Humanity, the date palm is believed to be the first tree cultivated by human beings, and was probably first harvested for its fruit nearly 7,000 years ago. Initial research efforts in date palm genetics focused on understanding the genetic diversity of date palm germplasm collections and its phylogenetic history, both important prerequisites for plant improvement. Despite various efforts, the center of origin of the date palm is still unclear, although genomic studies suggest two probable domestication events: one in the Middle East and the other in North Africa, with two separate gene pools. The current review covers studies related to omics analyses that have sought to decipher the present genetic diversity of the date palm. With advances and cost reductions in sequencing technologies, rapid progress has been made in the past few years in date palm genomics research. Along with organellar genomes, several reference genomes of the date palm are now available. In addition, several genotypes have been re-sequenced, either to detect single nucleotide polymorphisms (SNPs), or to study domestication and identification of key genes/loci associated with important agronomic traits, such as sex, fruit color, and sugar composition. These genomics research progress has paved the way to perform fast-track and precise germplasm improvement processes in date palm. In this study, we review the advances made in the genetics and genomics of the date palm so as to strategize targeted crop improvement plans for marginal areas of the Middle Eastern peninsula, North Africa, and other parts of the world.

show abstract

Brittle leaf disease induces an oxidative stress and decreases the expression of manganese-related genes in date palm (Phoenix dactylifera L.)

Cited by 18 publications

References 31 publications

Identification of Golovinomyces artemisiae Causing Powdery Mildew, Changes in Chlorophyll Fluorescence Parameters, and Antioxidant Levels in Artemisia selengensis

Identification of Golovinomyces artemisiae Causing Powdery Mildew, Changes in Chlorophyll Fluorescence Parameters, and Antioxidant Levels in Artemisia selengensis

Biochemical characterisation of chlorophyllase from leaves of selected Prunus species--a comparative study.

Recent advances in date palm genomics: A comprehensive review

Contact Info

Product

Resources

About