journal
https://read.qxmd.com/read/38531181/an-overview-of-aptamer-design-strategy-prominent-applications-and-potential-challenge-in-plants
#1
JOURNAL ARTICLE
Yanhui Yuan, Yi Li, Siying Liu, Pichang Gong, Jinxing Lin, Xi Zhang
Aptamers, serving as highly efficient molecular recognition and biotechnology tools, have garnered increasing interest in the realm of plant science in recent years. Aptamers are synthetic single-stranded short nucleotides or peptides, that bind targets with high specificity and affinity, triggering precise biological responses. As an alternative to antibodies, aptamers present promising avenues for advancement in biological researches. Aptamers function in a range of fields, encompassing cell signaling, drug development, biosensor technology, as well as botany, agricultural and forestry sciences...
March 19, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38507925/amyloplast-is-involved-in-the-miz1-modulated-root-hydrotropism
#2
JOURNAL ARTICLE
Yonghui Hong, Siqi Liu, Yadi Chen, Zixuan Yao, Shuqiu Jiang, Lulu Wang, Xinkai Zhu, Weifeng Xu, Jianhua Zhang, Ying Li
Roots exhibit hydrotropism in response to moisture gradients, with the hydrotropism-related gene Mizu-kussei1 (MIZ1) playing a role in regulating root hydrotropism in an oblique orientation. However, the mechanisms underlying MIZ1-regulated root hydrotropism are not well understood. In this study, we employed obliquely oriented experimental systems to investigate root hydrotropism in Arabidopsis. We found that the miz1 mutant displays reduced root hydrotropism but increased root gravitropism following hydrostimulation, as compared to wild-type plants...
March 15, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38522214/ph-change-accompanying-long-distance-electrical-signal-controls-systemic-jasmonate-biosynthesis
#3
JOURNAL ARTICLE
Maria Ladeynova, Darya Kuznetsova, Anna Pecherina, Vladimir Vodeneev
Local damaging stimuli cause a rapid increase in the content of the defense phytohormone jasmonic acid (JA) and its biologically active derivative jasmonoyl-L-isoleucine (JA-Ile) in undamaged distal tissues. The increase in JA and JA-Ile levels was coincident with a rapid decrease in the levels of the precursor 12-oxo-phytodienoic acid (OPDA). The propagation of a stimulus-induced long-distance electrical signal, variation potential (VP), which is accompanied by intracellular changes in pH and Ca2+ levels, preceded systemic changes in jasmonate content...
March 12, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38507926/metabolite-profiling-and-histochemical-localization-of-alkaloids-in-hippeastrum-papilio-ravena-van-scheepen
#4
JOURNAL ARTICLE
Gabriela Haist, Boriana Sidjimova, Elina Yankova-Tsvetkova, Milena Nikolova, Rumen Denev, Ivanka Semerdjieva, Jaume Bastida, Strahil Berkov
Hippeastrum papilio (Amaryllidaceae) is a promising new source of galanthamine - an alkaloid used for the cognitive treatment of Alzheimer's disease. The biosynthesis and accumulation of alkaloids are tissue - and organ-specific. In the present study, histochemical localization of alkaloids in H. papilio's plant organs with Dragendorff's reagent, revealed their presence in all studied samples. Alkaloids were observed in vascular bundles, vacuoles, and intracellular spaces, while in other plant tissues and structures depended on the plant organ...
March 11, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38484685/salicylic-acid-and-ethylene-dependent-effects-of-the-er-stress-inducer-tunicamycin-on-the-photosynthetic-light-reactions-in-tomato-plants
#5
JOURNAL ARTICLE
Nadeem Iqbal, Attila Ördög, Péter Koprivanacz, András Kukri, Zalán Czékus, Péter Poór
Plant hormones such as ethylene (ET) and salicylic acid (SA) have an elementary role in the regulation of ER stress and unfolded protein response (UPR) in plants via modulating defence responses or inducing oxidative stress. Chloroplasts can be sources and targets of reactive oxygen species (ROS) that affect photosynthetic efficiency, which has not been investigated under tunicamycin (Tm)-induced ER stress. In this study, the direct and indirect effects of Tm on chloroplastic ROS production were first investigated in leaves of wild-type tomato (Solanum lycopersicum L...
March 11, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38490054/identification-of-transcription-factor-genes-responsive-to-meja-and-characterization-of-a-lamyc2-transcription-factor-positively-regulates-lycorine-biosynthesis-in-lycoris-aurea
#6
JOURNAL ARTICLE
Zhe Zhou, Mingzhu Wu, Bin Sun, Jie Li, Junde Li, Zhengtai Liu, Meng Gao, Lei Xue, Sheng Xu, Ren Wang
Jasmonates (JAs) are among the main phytohormones, regulating plant growth and development, stress responses, and secondary metabolism. As the major regulator of the JA signaling pathway, MYC2 also plays an important role in plant secondary metabolite synthesis and accumulation. In this study, we performed a comparative transcriptome analysis of Lycoris aurea seedlings subjected to methyl jasmonate (MeJA) at different treatment times. A total of 31,193 differentially expressed genes (DEGs) were identified by RNA sequencing...
March 9, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38520968/searching-for-mechanisms-driving-root-pressure-in-zea-mays-a-transcriptomic-approach
#7
JOURNAL ARTICLE
Sarah Tepler Drobnitch, Joshua Wenz, Sean M Gleason, Louise H Comas
While there are many theories and a variety of innovative datasets contributing to our understanding of the mechanism generating root pressure in vascular plants, we are still unable to produce a specific cellular mechanism for any species. To discover these mechanisms, we used RNA-Seq to explore differentially expressed genes in three different tissues between individual Zea mays plants expressing root pressure and those producing none. Working from the perspective that roots cells are utililizing a combination of osmotic exudation and hydraulic pressure mechanisms to generate positively-pressured flow of water into the xylem from the soil, we hypothesized that differential expression analysis would yield candidate genes coding for membrane transporters, ion channels, ATPases, and hormones with clear relevance to root pressure generation...
March 5, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38460401/a-novel-oshb5-osapl-osmads27-oswrky102-regulatory-module-regulates-grain-size-in-rice
#8
JOURNAL ARTICLE
Han Zhang, Meng Liu, Kangqun Yin, Huanhuan Liu, Jianquan Liu, Zhen Yan
Grain size, a crucial trait that determines rice yield and quality, is typically regulated by multiple genes. Although numerous genes controlling grain size have been identified, the precise and dynamic regulatory network governing grain size is still not fully understood. In this study, we unveiled a novel regulatory module composed of OsHB5, OsAPL and OsMADS27/OsWRKY102, which plays a crucial role in modulating grain size in rice. As a positive regulator of grain size, OsAPL has been found to interact with OsHB5 both in vitro and in vivo...
March 3, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38471335/metabolism-and-development
#9
EDITORIAL
Alisdair R Fernie, Uwe Sonnewald, Arun Sampathkumar
No abstract text is available yet for this article.
February 28, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38430574/overexpression-of-msnip2-improves-salinity-tolerance-in-medicago-sativa
#10
JOURNAL ARTICLE
Weiye Kong, Haijun Huang, Wenxuan Du, Zhihu Jiang, Yijing Luo, Dengxia Yi, Guofeng Yang, Yongzhen Pang
Alfalfa (Medicago sativa) is one of the most widely cultivated forage crops in the world. However, alfalfa yield and quality are adversely affected by salinity stress. Nodulin 26-like intrinsic proteins (NIPs) play essential roles in water and small molecules transport and response to salt stress. Here, we isolated a salt stress responsive MsNIP2 gene and demonstrated its functions by overexpression in alfalfa. The open reading frame of MsNIP2 is 816 bp in length, and it encodes 272 amino acids. It has six transmembrane domains and two NPA motifs...
February 28, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38452650/metabolic-control-of-seed-germination-in-legumes
#11
REVIEW
Júlia de Paiva Gonçalves, Karla Gasparini, Edgard Augusto de Toledo Picoli, Maximiller Dal-Bianco Lamas Costa, Wagner Luiz Araujo, Agustin Zsögön, Dimas Mendes Ribeiro
Seed development, dormancy, and germination are connected with changes in metabolite levels. Not surprisingly, a complex regulatory network modulates biosynthesis and accumulation of storage products. Seed development has been studied profusely in Arabidopsis thaliana and has provided valuable insights into the genetic control of embryo development. However, not every inference applies to crop legumes, as these have been domesticated and selected for high seed yield and specific metabolic profiles and fluxes...
February 23, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38422631/impact-of-the-tor-pathway-on-plant-growth-via-cell-wall-remodeling
#12
REVIEW
Maria Juliana Calderan-Rodrigues, Camila Caldana
Plant growth is intimately linked to the availability of carbon and energy status. The Target of rapamycin (TOR) pathway is a highly relevant metabolic sensor and integrator of plant-assimilated C into development and growth. The cell wall accounts for around a third of the cell biomass, and the investment of C into this structure should be finely tuned for optimal growth. The plant C status plays a significant role in controlling the rate of cell wall synthesis. TOR signaling regulates cell growth and expansion, which are fundamental processes for plant development...
February 22, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38437759/oseil1-is-involved-in-the-response-to-heterogeneous-high-ammonium-in-rice-a-split-root-analysis
#13
JOURNAL ARTICLE
Jinlin Wu, Devrim Coskun, Guangjie Li, Zhaoyue Wang, Herbert J Kronzucker, Weiming Shi
Ammonium (NH4 + ) concentrations in rice fields show heterogeneous spatial distribution under the combined influences of nitrogen fertilizer application and modern agronomic practices. However, the characteristics and mechanisms of rice roots in response to heterogeneous NH4 + supply are not well understood. Here, we found a systemic response of rice roots to heterogeneous and high (10 mM) NH4 + supply using a split-root experiment, and show root growth on the NH4 + -free (NO3 - ) side was also inhibited by localized high-NH4 + supply...
February 20, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38428153/control-of-phloem-unloading-and-root-development
#14
REVIEW
Zixuan Liu, Raili Ruonala, Ykä Helariutta
Root growth and development need proper carbon partitioning between sources and sinks. Photosynthesis products are unloaded from the phloem and enter the root meristem cell by cell. While sugar transporters play a major role in phloem loading, phloem unloading occurs via the plasmodesmata in growing root tips. The aperture and permeability of plasmodesmata strongly influence symplastic unloading. Recent research has dissected the symplastic path for phloem unloading and identified several genes that regulate phloem unloading in the root...
February 17, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38422632/metabolic-changes-during-wheat-microspore-embryogenesis-induction-using-the-highly-responsive-cultivar-svilena
#15
JOURNAL ARTICLE
Teresa Perez-Piñar, Anja Hartmann, Sandra Bössow, Heike Gnad, Hans-Peter Mock
Androgenetically-derived haploids can be obtained by inducing embryogenesis in microspores. Thus, full homozygosity is achieved in a single generation, oppositely to conventional plant breeding programs. Here, the metabolite profile of embryogenic microspores of Triticum aestivum was acquired and integrated with transcriptomic existing data from the same samples in an effort to identify the key metabolic processes occurring during the early stages of microspore embryogenesis. Primary metabolites and transcription profiles were identified at three time points: prior to and immediately following a low temperature pre-treatment given to uninuclear microspores, and after the first nuclear division...
February 14, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38377939/the-role-of-promoter-methylation-of-the-genes-encoding-the-enzymes-metabolizing-di-and-tricarboxylic-acids-in-the-regulation-of-plant-respiration-by-light
#16
REVIEW
Dmitry N Fedorin, Alexander T Eprintsev, Abir U Igamberdiev
We discuss the role of epigenetic changes at the level of promoter methylation of the key enzymes of carbon metabolism in the regulation of respiration by light. While the direct regulation of enzymes via modulation of their activity and post-translational modifications is fast and readily reversible, the role of cytosine methylation is important for providing a prolonged response to environmental changes. In addition, adenine methylation can play a role in the regulation of transcription of genes. The mitochondrial and extramitochondrial forms of several enzymes participating in the tricarboxylic acid cycle and associated reactions are regulated via promoter methylation in opposite ways...
February 13, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38364452/nac-transcription-factor-elevates-iron-content-in-maize-a-promising-solution-to-combat-iron-deficiency
#17
JOURNAL ARTICLE
Muhammad Imran, Sarfraz Shafiq, Emilie Widemann
No abstract text is available yet for this article.
February 13, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38460400/ethylene-insensitive-2-ein2-destiny-shaper-the-post-translational-modification
#18
REVIEW
Meifei Su, Suiwen Hou
PTMs (Post-Translational Modifications) of proteins facilitate rapid modulation of protein function in response to various environmental stimuli. The EIN2 (Ethylene Insensitive 2) protein is a core regulatory of the ethylene signaling pathway. Recent findings have demonstrated that PTMs, including protein phosphorylation, ubiquitination, and glycosylation, govern EIN2 trafficking, subcellular localization, stability, and physiological roles. The cognition of multiple PTMs in EIN2 underscores the stringent regulation of protein...
February 10, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38382176/freezing-temperature-effects-on-photosystem-ii-in-antarctic-lichens-evaluated-by-chlorophyll-fluorescence
#19
JOURNAL ARTICLE
Aleksandra Andrzejowska, Josef Hájek, Anton Puhovkin, Hubert Harańczyk, Miloš Barták
This study explores and compares the limits for photosynthesis in subzero temperatures of six Antarctic lichens: Sphaerophorus globosus, Caloplaca regalis, Umbilicaria antarctica, Pseudephebe minuscula, Parmelia saxatilis and Lecania brialmontii combining linear cooling and chlorophyll fluorescence methods. The results revealed triphasic S-curves in the temperature response of the maximum quantum yield (FV /FM ) and effective quantum yield of photosystem II (ΦPSII ) for all species. All investigated species showed a high level of cryoresistance with critical temperatures (Tc ) below -20 °C...
February 8, 2024: Journal of Plant Physiology
https://read.qxmd.com/read/38335845/function-of-hormone-signaling-in-regulating-nitrogen-use-efficiency-in-plants
#20
REVIEW
Yunzhi Huang, Zhe Ji, Siyu Zhang, Shan Li
Nitrogen (N) is one of the most important nutrients for crop plant performance, however, the excessive application of nitrogenous fertilizers in agriculture significantly increases production costs and causes severe environmental problems. Therefore, comprehensively understanding the molecular mechanisms of N-use efficiency (NUE) with the aim of developing new crop varieties that combine high yields with improved NUE is an urgent goal for achieving more sustainable agriculture. Plant NUE is a complex trait that is affected by multiple factors, of which hormones are known to play pivotal roles...
February 5, 2024: Journal of Plant Physiology
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