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https://www.readbyqxmd.com/read/29045473/identification-of-functionally-important-micrornas-from-rice-inflorescence-at-heading-stage-of-a-qdty4-1-qtl-bearing-near-isogenic-line-under-drought-conditions
#1
Boon Huat Cheah, Sudhir Jadhao, Madavan Vasudevan, Ratnam Wickneswari, Kalaivani Nadarajah
A cross between IR64 (high-yielding but drought-susceptible) and Aday Sel (drought-tolerant) rice cultivars yielded a stable line with enhanced grain yield under drought screening field trials at International Rice Research Institute. The major effect qDTY4.1 drought tolerance and yield QTL was detected in the IR77298-14-1-2-10 Backcrossed Inbred Line (BIL) and its IR87705-7-15-B Near Isogenic Line (NIL) with 93.9% genetic similarity to IR64. Although rice yield is extremely susceptible to water stress at reproductive stage, currently, there is only one report on the detection of drought-responsive microRNAs in inflorescence tissue of a Japonica rice line...
2017: PloS One
https://www.readbyqxmd.com/read/29044697/atrae1-is-involved-in-degradation-of-aba-receptor-rcar1-and-negatively-regulates-aba-signaling-in-arabidopsis
#2
Dekuan Li, Liang Zhang, Xiaoyi Li, Xiangge Kong, Xiaoyu Wang, Ying Li, Zhibin Liu, Jianmei Wang, Xufeng Li, Yi Yang
The phytohormone abscisic acid (ABA) plays an important role in regulating plant growth, development and adaption to various environmental stresses. Regulatory components of ABA receptors (RCARs, also known as PYR/PYLs) sense ABA and initiate ABA signaling through inhibiting the activities of protein phosphatase 2C (PP2C) in Arabidopsis. However, the way in which ABA receptors are regulated is not well known. A DWD protein AtRAE1 (for RNA export factor 1 in Arabidopsis), which may act as a substrate receptor of CUL4-DDB1 E3 ligase, is an interacting partner of RCAR1/PYL9...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29044557/rice-phytoglobin-regulate-responses-under-low-mineral-nutrients-and-abiotic-stresses-in-arabidopsis-thaliana
#3
Alka Shankar, Joel Lars Fernandes, Kanwaljeet Kaur, Manisha Sharma, Suman Kundu, Girdhar K Pandey
Just like animals, plants also contain haemoglobins (known as phytoglobins in plants). Plant phytoglobins (Pgbs) have been categorized into six different classes viz. Phytogb0 (Pgb0), Phytogb1 (Pgb1), Phytogb2 (Pgb2), SymPhytogb (sPgb), Leghemoglobin (Lb) and Phytogb3 (Pgb3). Among the 6 Phytogbs, sPgb and Lb have been functionally characterized and the understanding of roles of other Pgbs is still evolving. In our present study, we have explored the function of two rice Pgbs (OsPgb1.1 and OsPgb1.2). OsPgb1...
October 17, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29044054/role-of-intravitreal-intracameral-antibiotics-to-prevent-traumatic-endophthalmitis-meta-analysis
#4
REVIEW
Thanigasalam Thevi, Adinegara Lutfi Abas
Traumatic endophthalmitis is a devastating condition that can occur following an open globe injury and result in loss of vision. The use of prophylactic antibiotics is empirical as most surgeons fear complications associated with the same. No systematic review has been performed in English on the role of intravitreal/intracameral antibiotics in preventing traumatic endophthalmitis. We searched for randomized controlled trials and controlled clinical trials comparing intracameral/intravitreal antibiotics with placebos on PubMed, Google Scholar, Science Direct, and Cochrane Library using keywords open globe/trauma/penetrating/perforating injuries endophthalmitis...
October 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29041132/wide-bandwidth-and-flat-multiwavelength-brillouin-erbium-fiber-laser
#5
A W Al-Alimi, N A Cholan, M H Yaacob, A F Abas, M T Alresheedi, M A Mahdi
A wide bandwidth and flat multiwavelength Brillouin-erbium fiber laser is demonstrated experimentally. In the proposed laser setup, the combination of a Brillouin mirror with feedback and a ring cavity with four-wave mixing assistance is realized. The efficiency of Brillouin Stokes lines generation is enhanced by the feedback-based Brillouin mirror structure. The effect of four-wave mixing in highly nonlinear fiber increases the generation of Brillouin Stokes lines in a wider bandwidth. The laser lines over 16 nm bandwidth (i...
August 7, 2017: Optics Express
https://www.readbyqxmd.com/read/29040694/lbd14-asl17-positively-regulates-lateral-root-formation-and-is-involved-in-aba-response-for-root-architecture-in-arabidopsis
#6
Eunkyeong Jeon, Na Young Kang, Chuloh Cho, Pil Joon Seo, Mi Chung Suh, Jungmook Kim
The LATERAL ORGAN BOUNDARIES (LOB) DOMAIN/ASYMMETRIC LEAVES2-LIKE (LBD/ASL) gene family members play key roles in diverse aspects of plant development. Previous studies have shown that LBD16, 18, 29, and 33 are critical for integrating the plant hormone auxin to control lateral root development in Arabidopsis thaliana. In the present study, we show that LBD14 is expressed exclusively in the root where it promotes lateral root (LR) emergence. Repression of LBD14 expression by ABA correlates with the inhibitory effects of ABA on LR emergence...
October 11, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29037050/simian-immunodeficiency-virus-infection-increases-blood-ethanol-concentration-duration-after-both-acute-and-chronic-administration
#7
Liz Simon, Robert Siggins, Peter Winsauer, Meghan Brashear, Tekeda Ferguson, Donald Mercante, Kejing Song, Curtis Vande Stouwe, Steve Nelson, Gregory J Bagby, Angela Martin Amedee, Patricia E Molina
Alcohol use disorder (AUD) is a frequent comorbidity among people living with HIV/AIDS (PLWHA). Alcohol consumption is a significant predictor of non-adherence to antiretroviral therapy (ART), as well as worsening immunological and virological indicators among ¬PLWHA. Clinical studies indicate that higher viral loads increase sensitivity to alcohol in PLWHA. The factors that influence alcohol kinetics after HIV infection and initiation of ART are not well understood, limiting the information upon which interventions can be designed to ameliorate the impact of alcohol misuse on this vulnerable patient population...
October 17, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/29030891/seasonal-below-ground-metabolism-in-switchgrass
#8
N A Palmer, A J Saathoff, E D Scully, C M Tobias, P Twigg, S Madhavan, M Schmer, R Cahoon, S E Sattler, S J Edmé, R B Mitchell, G Sarath
Switchgrass (Panicum virgatum), a perennial, polyploid, C4 warm-season grass is among the foremost herbaceous species being advanced as a source of biomass for biofuel end uses. At the end of every growing season, the aerial tissues senesce, and the below-ground rhizomes become dormant. Future growth is dependent on the successful over-wintering of the rhizomes. Although the importance of rhizome health to overall year-upon-year plant productivity has been long recognized, there is limited information on seasonal changes occurring during dormancy at both the transcriptome and metabolite levels...
October 14, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29030481/antisense-transcription-represses-arabidopsis-seed-dormancy-qtl-dog1-to-regulate-drought-tolerance
#9
Ruslan Yatusevich, Halina Fedak, Arkadiusz Ciesielski, Katarzyna Krzyczmonik, Anna Kulik, Grazyna Dobrowolska, Szymon Swiezewski
Plants have developed multiple strategies to sense the external environment and to adapt growth accordingly. Delay of germination 1 (DOG1) is a major quantitative trait locus (QTL) for seed dormancy strength in Arabidopsis thaliana that is reported to be expressed exclusively in seeds. DOG1 is extensively regulated, with an antisense transcript (asDOG1) suppressing its expression in seeds. Here, we show that asDOG1 shows high levels in mature plants where it suppresses DOG1 expression under standard growth conditions...
October 13, 2017: EMBO Reports
https://www.readbyqxmd.com/read/29027659/a-novel-cotton-wrky-gene-ghwrky6-like-improves-salt-tolerance-by-activating-the-aba-signalling-pathway-and-scavenging-of-reactive-oxygen-species
#10
Abid Ullah, Heng Sun, Hakim, Xiyan Yang, Xianlong Zhang
WRKY transcription factors are transcriptional regulators of signalling pathways involved in biotic and abiotic stress responses. In this study, we report that ectopic expression of the GhWRKY6-like gene significantly improved salt tolerance in Arabidopsis while silencing the GhWRKY6-like increase the sensitivity to abiotic stresses in cotton. GhWRKY6-like was localized to the nucleus. Expression of GhWRKY6-like was remarkably induced by salt, ethylene glycol (PEG) and abscisic acid (ABA) treatments. For further characterization, the GhWRKY6-like gene was cloned and transformed into Arabidopsis...
October 13, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/29027439/-resource-investigation-about-tibetan-medicine-rhodiola-kirilowii
#11
Dao-Xin Hong, Jin-Song Su, Jian Wen, Jing Zhang, Yi Zhang
The investigation aims to better understand the resource status of Rhodiola kirilowii, analysis the suitable habitat of wild Rh. kirilowii and protect the wild resources of Rh. Kirilowii, promoting the sustainable utilization of Rh. kirilowii resources. In this paper, we investigated the wild resources of Rh. kirilowii in 16 counties of Sichuan, Qinghai, Gansu and Yunnan by means of investigation and sampling investigation combined with interview. The results showed that the population densities of wild Rh...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29024850/combined-effects-of-fungal-inoculants-and-the-cytokinin-like-growth-regulator-thidiazuron-on-growth-phytohormone-contents-and-endophytic-root-fungi-in-miscanthus%C3%A2-%C3%A3-giganteus
#12
Christoph Stephan Schmidt, Libor Mrnka, Tomaš Frantík, Václav Motyka, Petre I Dobrev, Miroslav Vosátka
Aim of this study was to investigate main effects and interactions between symbiotic fungi and the cytokinin-like growth regulator thidiazuron (TDZ) in Miscanthus × giganteus. The arbuscular mycorrhiza fungus Rhizophagus intraradices (AMF) and the endophyte Piriformospora indica (PI) were chosen as model symbionts. The fungal inoculants and TDZ had no significant effect on plant growth but modulated phytohormone levels in the leaves. TDZ induced accumulation of salicylic acid in controls, but not in plants inoculated with fungi...
September 23, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29024118/rice-sumo-protease-overly-tolerant-to-salt-1-targets-the-transcription-factor-osbzip23-to-promote-drought-tolerance-in-rice
#13
Anjil Kumar Srivastava, Cunjin Zhang, Robert S Caine, Julie Gray, Ari Sadanandom
Conjugation of SUMO (Small Ubiquitin-like Modifier) protein to cellular targets is emerging as a very influential protein modification system. Once covalently bound SUMO conjugation can change the stability or functionality of its cognate target proteins. SUMO protease can rapidly reverse SUMO conjugation making this modification system highly dynamic. A major factor in the variation of SUMO-target function is the balance between the conjugated/de-conjugated forms. The mechanistic role of these regulatory SUMO proteases in mediating stress responses has not been defined in any crops...
October 10, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29018096/the-distinct-roles-of-class-i-and-ii-rpd3-like-histone-deacetylases-in-salinity-stress-response
#14
Minoru Ueda, Akihiro Matsui, Maho Tanaka, Tomoe Nakamura, Takahiro Abe, Kaori Sako, Taku Sasaki, Jong-Myong Kim, Akihiro Ito, Norikazu Nishino, Hiroaki Shimada, Minoru Yoshida, Motoaki Seki
Histone acetylation is an essential process in the epigenetic regulation of diverse biological processes including environmental stress responses in plants. Previously, our research group identified a histone deacetylase (HDAC) inhibitor (HDI) that confers salt tolerance in Arabidopsis. In the present study, we demonstrate that class I HDAC (HDA19) and class II HDACs (HDA5/14/15/18) control responses to salt stress through different pathways. The screening of 12 different selective HDIs indicated that seven newly reported HDIs enhance salt tolerance...
October 10, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29016962/an-apple-protein-kinase-mdsnrk1-1-interacts-with-mdcaip1-to-regulate-aba-sensitivity
#15
Xiao-Juan Liu, Xin Liu, Xiu-Hong An, Peng-Liang Han, Chun-Xiang You, Yu-Jin Hao
ABA is a crucial phytohormone for development and stress responses in plants. Snf1-related protein kinase 1.1 (SnRK1.1) is involved in the ABA response. However, the molecular mechanism underlying the SnRK1.1 response to ABA is largely unknown. Here, it was found that overexpression of the apple MdSnRK1.1 gene enhanced ABA sensitivity in both transgenic apple calli and Arabidopsis seedlings. Subsequently, a yeast two-hybrid screen demonstrated that MdCAIP1 (C2-domain ABA Insensitive Protein1) interacted with MdSnRK1...
July 25, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29016956/chickpea-wrky70-regulates-the-expression-of-a-homeodomain-leucine-zipper-hd-zip-i-transcription-factor-cahdz12-which-confers-abiotic-stress-tolerance-in-transgenic-tobacco-and-chickpea
#16
Senjuti Sen, Joydeep Chakraborty, Prithwi Ghosh, Debabrata Basu, Sampa Das
Drought and salinity are the two major environmental constraints that severely affect global agricultural productivity. Plant-specific HD-Zip transcription factors are involved in plant growth, development and stress responses. In the present study, we explored the functional characteristics and regulation of a novel HD-Zip (I) gene from chickpea, CaHDZ12, in response to water-deficit and salt-stress conditions. Transgenic tobacco lines overexpressing CaHDZ12 exhibited improved tolerance to osmotic stresses and increased sensitivity to abscisic acid (ABA)...
September 11, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29016915/drought-tolerance-conferred-in-soybean-glycine-max-l-by-gmmyb84-a-novel-r2r3-myb-transcription-factor
#17
Nan Wang, Wenxiao Zhang, Mengyin Qin, Shuo Li, Meng Qiao, Zhenhua Liu, Fengning Xiang
MYB-type transcription factors (MYB TFs) play diverse roles in plant development and stress responses. However, the mechanisms underlying the actions of MYB TFs during stress response remain unclear. In this study we identified a R2R3-MYB TF in soybean (Glycine max), denoted GmMYB84, which contributes to drought resistance. Expression of GmMYB84 was induced by drought, salt stress, H2O2 and ABA. Compared with wild-type (WT), GmMYB84-overexpressing soybean mutants (OE lines) exhibited enhanced drought resistance with higher survival rate, longer primary root length, greater proline and reactive oxygen species (ROS) contents, higher antioxidant enzyme activities [peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD)], a lower dehydration rate, and reduced malondialdehyde (MDA) content...
August 9, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28994416/a-high-quality-genome-assembly-of-quinoa-provides-insights-into-the-molecular-basis-of-salt-bladder-based-salinity-tolerance-and-the-exceptional-nutritional-value
#18
Changsong Zou, Aojun Chen, Lihong Xiao, Heike M Muller, Peter Ache, Georg Haberer, Meiling Zhang, Wei Jia, Ping Deng, Ru Huang, Daniel Lang, Feng Li, Dongliang Zhan, Xiangyun Wu, Hui Zhang, Jennifer Bohm, Renyi Liu, Sergey Shabala, Rainer Hedrich, Jian-Kang Zhu, Heng Zhang
Chenopodium quinoa is a halophytic pseudocereal crop that is being cultivated in an ever-growing number of countries. Because quinoa is highly resistant to multiple abiotic stresses and its seed has a better nutritional value than any other major cereals, it is regarded as a future crop to ensure global food security. We generated a high-quality genome draft using an inbred line of the quinoa cultivar Real. The quinoa genome experienced one recent genome duplication about 4.3 million years ago, likely reflecting the genome fusion of two Chenopodium parents, in addition to the γ paleohexaploidization reported for most eudicots...
October 10, 2017: Cell Research
https://www.readbyqxmd.com/read/28993661/metabolic-signatures-in-response-to-abscisic-acid-aba-treatment-in-brassica-napus-guard-cells-revealed-by-metabolomics
#19
Mengmeng Zhu, Sarah M Assmann
Drought can severely damage crops, resulting in major yield losses. During drought, vascular land plants conserve water via stomatal closure. Each stomate is bordered by a pair of guard cells that shrink in response to drought and the associated hormone abscisic acid (ABA). The activation of complex intracellular signaling networks underlies these responses. Therefore, analysis of guard cell metabolites is fundamental for elucidation of guard cell signaling pathways. Brassica napus is an important oilseed crop for human consumption and biodiesel production...
October 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28992607/effect-of-uv-radiation-and-its-implications-on-carotenoid-pathway-in-bixa-orellana-l
#20
M Sankari, H Hridya, P Sneha, C George Priya Doss, Siva Ramamoorthy
The current study was undertaken to analyse the effect of short-term UV-B and UV-C radiations in provoking carotenoid biosynthesis in Bixa orellana. Seeds of B. orellana were germinated and exposed to the short term UV pre-treatment under controlled environmental condition for 5days. The UV treated young seedlings response in pigment contents; antioxidant enzyme activity and mRNA gene expression level were analysed. The pigment content such as chlorophyll was increased in both UV-B and UV-C treated seedlings, but the total carotenoid level was decreased when compared to the control seedlings this can be attributed to the plant adaptability to survive in a stressed condition...
October 2, 2017: Journal of Photochemistry and Photobiology. B, Biology
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