keyword
MENU ▼
Read by QxMD icon Read
search

Malus

keyword
https://www.readbyqxmd.com/read/28531147/oriented-growth-of-%C3%AE-mno%C3%A2-nanorods-using-natural-extracts-from-grape-stems-and-apple-peels
#1
Lina Sanchez-Botero, Adriana P Herrera, Juan P Hinestroza
We report on the synthesis of alpha manganese dioxide (α-MnO₂) nanorods using natural extracts from Vitis vinifera grape stems and Malus domestica 'Cortland' apple peels. We used a two-step method to produce highly crystalline α-MnO₂ nanorods: (1) reduction of KMnO₄ in the presence of natural extracts to initiate the nucleation process; and (2) a thermal treatment to enable further solid-state growth of the nuclei. Transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM) images provided direct evidence of the morphology of the nanorods and these images were used to propose nucleation and growth mechanisms...
May 22, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28503152/identification-classification-and-expression-analysis-of-gras-gene-family-in-malus-domestica
#2
Sheng Fan, Dong Zhang, Cai Gao, Ming Zhao, Haiqin Wu, Youmei Li, Yawen Shen, Mingyu Han
GRAS genes encode plant-specific transcription factors that play important roles in plant growth and development. However, little is known about the GRAS gene family in apple. In this study, 127 GRAS genes were identified in the apple (Malus domestica Borkh.) genome and named MdGRAS1 to MdGRAS127 according to their chromosomal locations. The chemical characteristics, gene structures and evolutionary relationships of the MdGRAS genes were investigated. The 127 MdGRAS genes could be grouped into eight subfamilies based on their structural features and phylogenetic relationships...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28484477/ancient-plant-glyoxylate-succinic-semialdehyde-reductases-glyr1s-are-cytosolic-whereas-glyr2s-are-localized-to-both-mitochondria-and-plastids
#3
Carolyne J Brikis, Adel Zarei, Christopher P Trobacher, Jennifer R DeEll, Kazuhito Akama, Robert T Mullen, Gale G Bozzo, Barry J Shelp
Plant NADPH-dependent glyoxylate/succinic semialdehyde reductases 1 and 2 (GLYR1 and GLYR2) are considered to be involved in detoxifying harmful aldehydes, thereby preserving plant health during exposure to various abiotic stresses. Phylogenetic analysis revealed that the two GLYR isoforms appeared in the plant lineage prior to the divergence of the Chlorophyta and Streptophyta, which occurred approximately 750 million years ago. Green fluorescent protein fusions of apple (Malus x domestica Borkh.), rice (Oryza sativa L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28482241/characterization-of-three-chalcone-synthase-like-genes-from-apple-malus-x-domestica-borkh
#4
Mosaab Yahyaa, Samah Ali, Rachel Davidovich-Rikanati, Muhammad Ibdah, Alona Shachtier, Yoram Eyal, Efraim Lewinsohn, Mwafaq Ibdah
Apple (Malus x domestica Brokh.) is a widely cultivated deciduous tree species of significant economic importance. Apple leaves accumulate high levels of flavonoids and dihydrochalcones, and their formation is dependent on enzymes of the chalcone synthase family. Three CHS genes were cloned from apple leaves and expressed in Escherichia coli. The encoded recombinant enzymes were purified and functionally characterized. In-vitro activity assays indicated that MdCHS1, MdCHS2 and MdCHS3 code for proteins exhibiting polyketide synthase activity that accepted either p-dihydrocoumaroyl-CoA, p-coumaroyl-CoA, or cinnamoyl-CoA as starter CoA substrates in the presence of malonyl-CoA, leading to production of phloretin, naringenin chalcone, and pinocembrin chalcone...
May 5, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28469624/md-mir156ab-and-md-mir395-target-wrky-transcription-factors-to-influence-apple-resistance-to-leaf-spot-disease
#5
Qiulei Zhang, Yang Li, Yi Zhang, Chuanbao Wu, Shengnan Wang, Li Hao, Shengyuan Wang, Tianzhong Li
MicroRNAs (miRNAs) are key regulators of gene expression that post-transcriptionally regulate transcription factors involved in plant physiological activities. Little is known about the effects of miRNAs in disease resistance in apple (Malus×domestica). We globally profiled miRNAs in the apple cultivar Golden Delicious (GD) infected or not with the apple leaf spot fungus Alternaria alternaria f. sp. mali (ALT1), and identified 58 miRNAs that exhibited more than a 2-fold upregulation upon ALT1 infection. We identified a pair of miRNAs that target protein-coding genes involved in the defense response against fungal pathogens; Md-miR156ab targets a novel WRKY transcription factor, MdWRKYN1, which harbors a TIR and a WRKY domain...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28450013/extraction-identification-and-antioxidant-and-anticancer-tests-of-seven-dihydrochalcones-from-malus-red-splendor-fruit
#6
Zhengcao Xiao, Yunyuan Zhang, Xian Chen, Yule Wang, Weifeng Chen, Qipeng Xu, Pengmin Li, Fengwang Ma
Five dihydrochalcone compounds, including phlorizin, trilobatin, 3-hydroxyphlorizin, sieboldin and phloretin 2'-xyloglucoside, were isolated from ornamental Malus 'Red Splendor' fruit. The chemical structures of these compounds were elucidated by LC-ESI-MS and NMR. Phloretin and 3-hydroxyphloretin were produced by hydrolysis. The antioxidant capacities of these seven compounds were examined by DPPH and ABTS assays, while their cytotoxicity to five cancer cell lines were evaluated by the MTT assay. The results showed that the DPPH assay mainly reflected the antioxidant capacity of the B ring, whereas the ABTS assay was mostly related to the A ring of the dihydrochalcone molecule...
September 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28443104/genome-wide-identification-and-characterization-of-apple-bhlh-transcription-factors-and-expression-analysis-in-response-to-drought-and-salt-stress
#7
Ke Mao, Qinglong Dong, Chao Li, Changhai Liu, Fengwang Ma
The bHLH (basic helix-loop-helix) transcription factor family is the second largest in plants. It occurs in all three eukaryotic kingdoms, and plays important roles in regulating growth and development. However, family members have not previously been studied in apple. Here, we identified 188 MdbHLH proteins in apple "Golden Delicious" (Malus × domestica Borkh.), which could be classified into 18 groups. We also investigated the gene structures and 12 conserved motifs in these MdbHLHs. Coupled with expression analysis and protein interaction network prediction, we identified several genes that might be responsible for abiotic stress responses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28440563/the-sumo-e3-ligase-mdsiz1-promotes-anthocyanin-accumulation-by-sumoylating-mdmyb1-under-low-temperature-conditions-in-apple
#8
Li-Jie Zhou, Yuan-Yuan Li, Rui-Fen Zhang, Chun-Ling Zhang, Xing-Bin Xie, Cheng Zhao, Yu-Jin Hao
MdMYB1 acts as a crucial component of the MYB-bHLH-WD40 (MBW) complex to regulate anthocyanin biosynthesis in red-skinned apples (Malus domestica), but little is known about its posttranslational regulation. Here, a SUMO E3 ligase MdSIZ1 was screened out as an MdMYB1-interacting protein with a yeast two-hybridization approach. The interaction between MdSIZ1 and MdMYB1 was further verified with pull-down and CoIP assays. Furthermore, it was found that MdSIZ1 directly sumoylated MdMYB1 proteins in vivo and in vitro, especially under moderately low temperature (17 °C) conditions, and that this sumoylation was required for MdMYB1 protein stability...
April 25, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28424966/transcriptomic-analysis-of-molecular-responses-in-malus-domestica-m26-roots-affected-by-apple-replant-disease
#9
Stefan Weiß, Melanie Bartsch, Traud Winkelmann
Gene expression studies in roots of apple replant disease affected plants suggested defense reactions towards biotic stress to occur which did not lead to adequate responses to the biotic stressors. Apple replant disease (ARD) leads to growth inhibition and fruit yield reduction in replanted populations and results in economic losses for tree nurseries and fruit producers. The etiology is not well understood on a molecular level and causal agents show a great diversity indicating that no definitive cause, which applies to the majority of cases, has been found out yet...
April 19, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28424730/melatonin-improves-waterlogging-tolerance-of-malus-baccata-linn-borkh-seedlings-by-maintaining-aerobic-respiration-photosynthesis-and-ros-migration
#10
Xiaodong Zheng, Jingzhe Zhou, Dun-Xian Tan, Na Wang, Lin Wang, Dongqian Shan, Jin Kong
Waterlogging, one of the notorious abiotic stressors, retards the growth of apple plants and reduces their production. Thus, it is an urgent agenda for scientists to identify the suitable remedies for this problem. In the current study, we found that melatonin significantly improved the tolerance of apple seedlings against waterlogging stress. This was indicated by the reduced chlorosis and wilting of the seedlings after melatonin applications either by leaf spray or root irrigation. The mechanisms involve in that melatonin functions to maintain aerobic respiration, preserves photosynthesis and reduces oxidative damage of the plants which are under waterlogging stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424713/comprehensive-genomic-identification-and-expression-analysis-of-the-phosphate-transporter-pht-gene-family-in-apple
#11
Tingting Sun, Mingjun Li, Yun Shao, Lingyan Yu, Fengwang Ma
Elemental phosphorus (Pi) is essential to plant growth and development. The family of phosphate transporters (PHTs) mediates the uptake and translocation of Pi inside the plants. Members include five sub-cellular phosphate transporters that play different roles in Pi uptake and transport. We searched the Genome Database for Rosaceae and identified five clusters of phosphate transporters in apple (Malus domestica), including 37 putative genes. The MdPHT1 family contains 14 genes while MdPHT2 has two, MdPHT3 has seven, MdPHT4 has 11, and MdPHT5 has three...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28421103/svp-like-mads-box-genes-control-dormancy-and-budbreak-in-apple
#12
Rongmei Wu, Sumathi Tomes, Sakuntala Karunairetnam, Stuart D Tustin, Roger P Hellens, Andrew C Allan, Richard C Macknight, Erika Varkonyi-Gasic
The annual growth cycle of trees is the result of seasonal cues. The onset of winter triggers an endodormant state preventing bud growth and, once a chilling requirement is satisfied, these buds enter an ecodormant state and resume growing. MADS-box genes with similarity to Arabidopsis SHORT VEGETATIVE PHASE (SVP) [the SVP-like and DORMANCY ASSOCIATED MADS-BOX (DAM) genes] have been implicated in regulating flowering and growth-dormancy cycles in perennials. Here, we identified and characterized three DAM-like (MdDAMs) and two SHORT VEGETATIVE PHASE-like (MdSVPs) genes from apple (Malus × domestica 'Royal Gala')...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28392893/traditional-persian-topical-medications-for-gastrointestinal-diseases
#13
REVIEW
Laleh Dehghani Tafti, Seyyed Mahyar Shariatpanahi, Mahmoud Mahdavi Damghani, Behjat Javadi
Drug delivery across the skin is used for several millennia to ease gastrointestinal (GI) ailments in Traditional Persian Medicine (TPM). TPM topical remedies are generally being applied on the stomach, lower abdomen, lower back and liver to alleviate GI illnesses such as dyspepsia, gastritis, GI ulcers, inflammatory bowel disease, intestinal worms and infections. The aim of the present study is to survey the topical GI remedies and plant species used as ingredients for these remedies in TPM. In addition, pharmacological activities of the mentioned plants have been discussed...
March 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28384562/overexpression-of-mpcys4-a-phytocystatin-gene-from-malus-prunifolia-willd-borkh-delays-natural-and-stress-induced-leaf-senescence-in-apple
#14
Yanxiao Tan, Yingli Yang, Chao Li, Bowen Liang, Mingjun Li, Fengwang Ma
Phytocystatins are a well-characterized class of naturally occurring protease inhibitors that prevent the catalysis of papain-like cysteine proteases. The action of cystatins in stress tolerance has been studied intensively, but relatively little is known about their functions in plants during leaf senescence. Here, we examined the potential roles of the apple cystatin, MpCYS4, in leaf photosynthesis as well as the concentrations and composition of leaf proteins when plants encounter natural or stress-induced senescence...
March 31, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28380866/novel-method-for-determination-of-optical-rotatory-dispersion-spectrum-by-using-line-scan-ccd
#15
Shixin Jiang, Hongzhi Jia, Yu Lei, Xinrong Shen, Junjie Cao, Ning Wang
A novel method is presented for rapid measurement of optical rotatory dispersion (ORD). Light passes through a polarizer, sample and analyzer, to a transmission grating that disperses the collimated light beam. A step-motor rotating stage controlled by a digital signal processor changes the analyzer orientation. The light power is measured by a charge-coupled device (CCD) after each rotating-stage step. The optical rotation angle for each wavelength is determined from the shift between two Malus curves obtained from each CCD pixel...
April 3, 2017: Optics Express
https://www.readbyqxmd.com/read/28380280/alcohol-acyl-transferase-1-links-two-distinct-volatile-pathways-that-produce-esters-and-phenylpropenes-in-apple-fruit
#16
Yar-Khing Yauk, Edwige J F Souleyre, Adam J Matich, Xiuyin Chen, Mindy Y Wang, Blue Plunkett, Andrew P Dare, Richard V Espley, Sumathi Tomes, David Chagné, Ross G Atkinson
Fruit accumulate a diverse set of volatiles including esters and phenylpropenes. Volatile esters are synthesised via fatty acid degradation or from amino acid precursors with the final step being catalysed by alcohol acyl transferases (AATs). Phenylpropenes are produced as a side branch of the general phenylpropanoid pathway. Major QTLs on apple (Malus x domestica) LG2 for production of the phenylpropene estragole and volatile esters (including 2-methylbutyl acetate and hexyl acetate) both co-located with the MdAAT1 gene...
April 5, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28379170/a-two-axis-goniometric-sensor-for-tracking-finger-motion
#17
Lefan Wang, Turgut Meydan, Paul Ieuan Williams
The study of finger kinematics has developed into an important research area. Various hand tracking systems are currently available; however, they all have limited functionality. Generally, the most commonly adopted sensors are limited to measurements with one degree of freedom, i.e., flexion/extension of fingers. More advanced measurements including finger abduction, adduction, and circumduction are much more difficult to achieve. To overcome these limitations, we propose a two-axis 3D printed optical sensor with a compact configuration for tracking finger motion...
April 5, 2017: Sensors
https://www.readbyqxmd.com/read/28370633/silencing-a-phloretin-specific-glycosyltransferase-perturbs-both-general-phenylpropanoid-biosynthesis-and-plant-development
#18
Andrew P Dare, Yar-Khing Yauk, Sumathi Tomes, Tony K McGhie, Ria S Rebstock, Janine M Cooney, Ross G Atkinson
The polyphenol profile of apple (Malus x domestica) is dominated by the dihydrochalcone glycoside phloridzin, however, its physiological role is yet to be elucidated. Biosynthesis of phloridzin occurs as a side-branch of the main phenylpropanoid pathway with the final step mediated by the phloretin-specific glycosyltransferase UGT88F1. Unexpectedly, given that UGTs are sometimes viewed as 'decorating enzymes', UGT88F1 knockdown lines were severely dwarfed with greatly reduced internode lengths, narrow lanceolate leaves, and changes in leaf and fruit cellular morphology...
April 2, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28349256/virus-induced-gene-silencing-of-the-two-squalene-synthase-isoforms-of-apple-tree-malus%C3%A2-%C3%A3-%C3%A2-domestica-l-negatively-impacts-phytosterol-biosynthesis-plastid-pigmentation-and-leaf-growth
#19
Sandra M Navarro Gallón, Carolina Elejalde-Palmett, Dimitri Daudu, Franziska Liesecke, Frédéric Jullien, Nicolas Papon, Thomas Dugé de Bernonville, Vincent Courdavault, Arnaud Lanoue, Audrey Oudin, Gaëlle Glévarec, Olivier Pichon, Marc Clastre, Benoit St-Pierre, Lucia Atehortùa, Nobuyuki Yoshikawa, Nathalie Giglioli-Guivarc'h, Sébastien Besseau
The use of a VIGS approach to silence the newly characterized apple tree SQS isoforms points out the biological function of phytosterols in plastid pigmentation and leaf development. Triterpenoids are beneficial health compounds highly accumulated in apple; however, their metabolic regulation is poorly understood. Squalene synthase (SQS) is a key branch point enzyme involved in both phytosterol and triterpene biosynthesis. In this study, two SQS isoforms were identified in apple tree genome. Both isoforms are located at the endoplasmic reticulum surface and were demonstrated to be functional SQS enzymes using an in vitro activity assay...
March 27, 2017: Planta
https://www.readbyqxmd.com/read/28338881/mdhb1-down-regulation-activates-anthocyanin-biosynthesis-in-the-white-fleshed-apple-cultivar-granny-smith
#20
Yonghua Jiang, Cuihua Liu, Dan Yan, Xiaohong Wen, Yanli Liu, Haojie Wang, Jieyu Dai, Yujie Zhang, Yanfei Liu, Bin Zhou, Xiaolin Ren
Coloration in apple (Malus×domestica) flesh is mainly caused by the accumulation of anthocyanin. Anthocyanin is biosynthesized through the flavonoid pathway and regulated by MYB, bHLH, and WD40 transcription factors (TFs). Here, we report that the HD-Zip I TF MdHB1 was also involved in the regulation of anthocyanin accumulation. MdHB1 silencing caused the accumulation of anthocyanin in 'Granny Smith' flesh, whereas its overexpression reduced the flesh content of anthocyanin in 'Ballerina' (red-fleshed apple)...
February 1, 2017: Journal of Experimental Botany
keyword
keyword
103821
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"