journal
https://read.qxmd.com/read/38520244/deciphering-mirna-lncrna-mrna-interaction-through-experimental-validation-of-mirnas-lncrnas-and-mirna-targets-on-mrnas-in-cajanus-cajan
#1
JOURNAL ARTICLE
M R Chowdhury, C Chatterjee, D Ghosh, J Mukherjee, S Shaw, J Basak
Pigeon pea (Cajanus cajan) is widely cultivated for its nutritional and medicinal value yet remains an orphan crop as productivity has not been improved because of a lack of genome and non-coding genome information. Non-coding RNAs, like miRNAs and long non-coding RNAs (lncRNAs), are involved in regulation of growth, metabolism, development, and stress response, and have a critical role in post-transcriptional gene regulation (PTGR). We attempted to elucidate the roles of miRNAs and lncRNAs in pigeon pea through experimental validation of computationally predicted miRNAs and lncRNAs and targets of miRNAs on mRNAs...
March 23, 2024: Plant Biology
https://read.qxmd.com/read/38509772/drought-priming-induced-stress-memory-improves-subsequent-drought-or-heat-tolerance-via-activation-of-%C3%AE-aminobutyric-acid-regulated-pathways-in-creeping-bentgrass
#2
JOURNAL ARTICLE
Y Yuan, M Tan, M Zhou, M J Hassan, L Lin, J Lin, Y Zhang, Z Li
Recurrent drought can induce stress memory in plants to induce tolerance to subsequent stress, such as high temperature or drought. Drought priming (DP) is an effective approach to improve tolerance to various stresses; however, the potential mechanism of DP-induced stress memory has not been fully resoved. We examined DP-regulated subsequent drought tolerance or thermotolerance associated with changes in physiological responses, GABA and NO metabolism, heat shock factor (HSF) and dehydrin (DHN) pathways in perennial creeping bentgrass...
March 21, 2024: Plant Biology
https://read.qxmd.com/read/38488200/differential-photosynthetic-plasticity-of-amazonian-tree-species-in-response-to-light-environments
#3
JOURNAL ARTICLE
A D R Nina Junior, J M F Maia, S V C Martins, N V Dos Santos Nina, K C P da Costa, J C de Carvalho, M Schramm Mielke, A Nunes-Nesi, W L Araújo, J F de Carvalho Gonçalves
To investigate how and to what extent there are differences in the photosynthetic plasticity of trees in response to different light environments, six species from three successional groups (late successional, mid-successional, and pioneers) were exposed to three different light environments [deep shade - DS (5% full sunlight - FS), moderate shade - MS (35% FS) and full sunlight - FS]. Maximum net photosynthesis (Amax ), leaf N partitioning, stomatal, mesophile, and biochemical limitations (SL, ML, and BL, respectively), carboxylation velocity (Vcmax ), and electron transport (Jmax ) rates, and the state of photosynthetic induction (IS) were evaluated...
March 15, 2024: Plant Biology
https://read.qxmd.com/read/38477557/monocots-and-eudicots-have-more-conservative-flower-water-use-strategies-than-basal-angiosperms
#4
JOURNAL ARTICLE
Y Ke, Y-B Zhang, F-P Zhang, D Yang, Q Wang, X-R Peng, X-Y Huang, J Sher, J-L Zhang
Water balance is crucial for the growth and flowering of plants. However, the mechanisms by which flowers maintain water balance are poorly understood across different angiosperm branches. Here, we investigated 29 floral hydraulic and economic traits in 24 species from ANA grade, magnoliids, monocots, and eudicots. Our main objective was to compare differences in flower water use strategies between basal angiosperms (ANA grade and magnoliids) and derived group (monocots and eudicots). We found that basal angiosperms had richer petal stomatal density, higher pedicel hydraulic diameter, and flower mass per area, but lower pedicel vessel wall reinforcement and epidermal cell thickness compared to monocots and eudicots...
March 13, 2024: Plant Biology
https://read.qxmd.com/read/38477075/are-tropical-forests-approaching-critical-temperature-thresholds
#5
JOURNAL ARTICLE
K Winter
There is growing concern about the fate of tropical forests in the face of rising global temperatures. Doughty et al. (2023) suggest that an increase in air temperature beyond ∼4 °C will result in massive death of tropical forest leaves and potentially tree death. However, this prediction relies on assumptions that likely underestimate the heat tolerance of tropical leaves.
March 13, 2024: Plant Biology
https://read.qxmd.com/read/38466186/seedlings-of-poncirus-trifoliata-exhibit-tissue-specific-detoxification-in-response-to-nh-4-toxicity
#6
JOURNAL ARTICLE
Z Fan, M N Lali, H Xiong, Y Luo, Y Wang, Y Wang, M Lu, J Wang, X He, X Shi, Y Zhang
Ammonium nitrogen (NH4 + -N) is essential for fruit tree growth, but the impact of excess NH4 + -N from fertilizer on evergreen citrus trees is unclear. In a climate chamber, 8-month-old citrus plants were exposed to five different hydroponic NH4 + -N concentrations (0, 5, 10, 15 and 20 mm) for 1 month to study effects of NH4 + -N on growth characteristics, N uptake, metabolism, antioxidant enzymes and osmotic regulatory substances. Application of 10 mm NH4 + -N adversely affected root plasma membrane integrity, root physiological functions, and plant biomass...
March 11, 2024: Plant Biology
https://read.qxmd.com/read/38444147/phylogenetics-and-phylogeography-of-euphorbia-canariensis-reveal-an-extreme-canarian-asian-disjunction-but-limited-inter-island-colonization
#7
JOURNAL ARTICLE
A J Coello, P Vargas, E Cano, R Riina, M Fernández-Mazuecos
Euphorbia canariensis is an iconic endemic species representative of the lowland xerophytic communities of the Canary Islands. It is widely distributed in the archipelago despite having diasporas unspecialized for long-distance dispersal. Here, we reconstructed the evolutionary history of E. canariensis at two levels: a time-calibrated phylogenetic analysis aimed at clarifying interspecific relationships and large-scale biogeographic patterns; and a phylogeographic study focused on the history of colonization across the Canary Islands...
March 5, 2024: Plant Biology
https://read.qxmd.com/read/38442014/forb-stability-dwarf-shrub-stability-and-species-asynchrony-regulate-ecosystem-stability-along-an-experimental-precipitation-gradient-in-a-semi-arid-desert-grassland
#8
JOURNAL ARTICLE
L Zhang, J Gao, R Zhao, J Wang, L Hao, M Wang
Precipitation pattern changes may affect plant biodiversity, which could impact ecosystem stability. However, the effects of changes in precipitation regime on ecosystem stability and their potential mechanisms are still unclear. We conducted a 3-year field manipulation experiment with five precipitation treatments (-40%, -20%, 0% (CK), +20% and +40% of ambient growing season precipitation) in a semi-arid desert grassland to examine the effects of precipitation alterations on functional group stability, species asynchrony, and diversity, and the underlying mchanisms of ecosystem stability using structural equation modelling...
March 5, 2024: Plant Biology
https://read.qxmd.com/read/38441404/disentangling-the-effect-of-growth-from-development-in-size-related-trait-scaling-relationships
#9
JOURNAL ARTICLE
M Millan, G Ottaviani, H Beckett, S Archibald, H Mangena, N Stevens
In plant ecology, the terms growth and development are often used interchangeably. Yet these constitute two distinct processes. Plant architectural traits (e.g. number of successive forks) can estimate development stages. Here, we show the importance of including the effect of development stages to better understand size-related trait scaling relationships (i.e. between height and stem diameter). We focused on one common savanna woody species (Senegalia nigrescens) from the Greater Kruger Area, South Africa...
March 5, 2024: Plant Biology
https://read.qxmd.com/read/38433356/an-investigation-into-the-potential-for-upward-range-expansion-in-high-montane-species-on-the-roof-of-the-world
#10
JOURNAL ARTICLE
F J White, A Mondoni, A Corli, B B Shrestha, G Rossi, S Orsenigo
Climate warming is occurring in high-mountain areas at a faster rate than the global average. To escape the increasing temperatures, alpine species may shift in distribution upwards, threatening cold-adapted nival plant specialists. However, little is known about the success of seedling emergence and establishment at high altitudes outside the current range, particularly in the highest mountain areas of the Himalayas. We selected four native alpine species occurring around 4000 m a.s.l. and sowed seeds at the natural growing site (GS), at a high elevation site (HS; 5000 m a...
March 3, 2024: Plant Biology
https://read.qxmd.com/read/38430522/effects-of-litter-amount-and-seed-sowing-position-on-seedling-emergence-and-growth-of-hemiparasitic-rhinanthus-species-under-drought-stress
#11
JOURNAL ARTICLE
A Zimmerbeutel, T Diekötter, H Reck, H Nissen, L J Wiedmann, T W Donath
Roadside vegetation in Central Europe is mostly species-poor and dominated by a few grass species. Hemiparasitic plant species, including Rhinanthus spp., might effectively restrict grass growth, thereby making space for light-dependent herb species. Despite the significance of abiotic site conditions for plant establishment in general, their effects on Rhinanthus establishment are less well known. We investigated combined effects of water availability, litter amount and seed position within litter on Rhinanthus seedling emergence and growth...
March 2, 2024: Plant Biology
https://read.qxmd.com/read/38427439/maternal-effects-and-inbreeding-depression-in-post-translocation-progeny-of-campanula-glomerata
#12
JOURNAL ARTICLE
F Van Rossum, S Le Pajolec
Evaluation of plant translocation success based on fitness-related quantitative traits combined with molecular markers may contribute to a finer assessment of inbreeding, selective and rescue processes, which might have long-term consequences for population dynamics and viability. We investigated fitness traits (seed germination, seedling viability, and juvenile growth and mortality) combined with 15 microsatellite loci of the first post-translocation seed progeny from two translocated populations of Campanula glomerata, an insect-pollinated, self-incompatible perennial herb...
March 1, 2024: Plant Biology
https://read.qxmd.com/read/38407522/viability-and-dormancy-of-the-clematis-vitalba-aerial-seed-bank
#13
JOURNAL ARTICLE
B Jarvis-Lowry, K C Harrington, H Ghanizadeh, A W Robertson
Old man's beard (Clematis vitalba L.) is a liana species that has become invasive in many areas of its introduced range. Seeds are produced in abundance and are both physiologically and morphologically dormant upon maturity. To understand the importance of seeds to its invasiveness, changes in viability and dormancy of the aerial seed bank were tracked throughout the after-ripening period and during storage. Seeds collected every second month for 2 years were subjected to germination tests. Other seeds stored in outdoor ambient conditions or in a dry, chilled state were dissected before, during, and after imbibition, as well as during incubation, to measure embryo size...
February 26, 2024: Plant Biology
https://read.qxmd.com/read/38407440/pollen-anther-stamen-and-androecium-mimicry
#14
REVIEW
K Lunau, M G G De Camargo, V L G Brito
Floral colours represent a highly diverse communication signal mainly involved in flower visitors' attraction and guidance, but also flower discrimination, filtering non-pollinators and discouraging floral antagonists. The divergent visual systems and colour preferences of flower visitors, as well as the necessity of cues for flower detection and discrimination, foster the diversity of floral colours and colour patterns. Despite the bewildering diversity of floral colour patterns, a recurrent component is a yellow UV-absorbing floral centre, and it is still not clear why this pattern is so frequent in angiosperms...
February 26, 2024: Plant Biology
https://read.qxmd.com/read/38363032/crispr-cas9-and-beyond-identifying-target-genes-for-developing-disease-resistant-plants
#15
REVIEW
H J Park, M Kim, D Lee, H J Kim, H W Jung
Throughout the history of crop domestication, desirable traits have been selected in agricultural products. However, such selection often leads to crops and vegetables with weaker vitality and viability than their wild ancestors when exposed to adverse environmental conditions. Considering the increasing human population and climate change challenges, it is crucial to enhance crop quality and quantity. Accordingly, the identification and utilization of diverse genetic resources are imperative for developing disease-resistant plants that can withstand unexpected epidemics of plant diseases...
February 16, 2024: Plant Biology
https://read.qxmd.com/read/38349815/growing-or-reproducing-assessing-the-existence-of-a-trade-off-in-the-globose-cactus-gymnocalycium-monvillei
#16
JOURNAL ARTICLE
M A Lorenzati, N L Aliscioni, N E Delbón, D E Gurvich
Resource allocation in plants is a fundamental aspect of life history theory. In Cactaceae, the specific trade-off between sexual reproduction and vegetative growth has still not been studied. The aim of this work was to assess if there is a trade-off between growth and reproduction, and to analyse whether both growth and allocation to reproduction depend on size of the individual. In this study, we used Gymnocalycium monvillei, a globose cactus endemic to the mountains of central Argentina, as a model species...
February 13, 2024: Plant Biology
https://read.qxmd.com/read/38345578/drought-priming-reduces-calligonum-mongolicum-sensitivity-to-recurrent-droughts-via-coordinated-regulation-of-osmolytes-antioxidants-and-hormones
#17
JOURNAL ARTICLE
A Ullah, A Tariq, F Zeng, M A Asghar, J Sardans, J Peñuelas
Pre-exposure of plants to abiotic stressors may induce stress memory and improve tolerance to subsequent stresses. Here, 3-month-old Calligonum mongolicum seedlings were exposed to drought (60 days) with (primed) or without (unprimed) early drought exposure of 50 days, to determine whether this enhances seedling resistance and investigate possible underlying mechanisms. Compared to unprimed, primed seedlings had higher biomass, shoot relative water content (15% and 22%), chlorophyll a, chlorophyll b, and carotenoids...
February 12, 2024: Plant Biology
https://read.qxmd.com/read/38315499/the-legacy-of-past-droughts-induces-water-sparingly-behaviour-in-gr%C3%A3-ner-veltliner-grapevines
#18
JOURNAL ARTICLE
J C Herrera, S Savoi, J Dostal, K Elezovic, M Chatzisavva, A Forneck, T Savi
Drought is becoming more frequent and severe in numerous wine-growing regions. Nevertheless, limited research has examined the legacy of recurrent droughts, focusing on leaf physiology and anatomy over consecutive seasons. We investigated drought legacies (after 2 years of drought exposure) in potted grapevines, focusing on stomatal behaviour under well-watered conditions during the third year. Vines were subjected for two consecutive years to short- (SD) or long-term (LD) seasonal droughts, or well-watered conditions (WW)...
February 5, 2024: Plant Biology
https://read.qxmd.com/read/38315483/a-novel-type-of-neighbour-perception-elicits-reproductive-plasticity-in-an-annual-plant-with-a-mixed-mating-system
#19
JOURNAL ARTICLE
O Falik, I Hoffmann, A Novoplansky
Plants display various forms of phenotypic plasticity in anticipation of changing conditions, many of which are influenced by information obtained from neighbouring plants. Here, we tested the hypothesis that cleistogamic Lamium amplexicaule plants can adaptively modify production of chasmogamous (CH) and cleistogamous (CL) flowers based on the perception of conspecific neighbours. The production and proportion of CH and CL flowers was examined in individual L. amplexicaule grown at varying densities or treated with root leachates from plants grown at different densities...
February 5, 2024: Plant Biology
https://read.qxmd.com/read/38315474/investigating-the-longstanding-mystery-of-stigma-length-differences-between-morphs-of-distylous-plants
#20
JOURNAL ARTICLE
R Trevizan, P E Oliveira, J C F Cardoso
Longer stigmas in short-styled morphs of distylous plants have been considered an adaptive characteristic that increases intermorph pollen deposition. The greater pollen deposition in short-styled stigmas may be a by-product of their longer length, making deposition effectiveness comparison between morphs unfeasible. Thus, investigating which morph has the relatively most efficient stigma (i.e., pollen deposition per unit length) can boost our understanding of the adaptive significance of longer stigmas. Here, we compared pollen deposition between morphs relative to stigma length and assessed whether short-styled stigmas are more, less, or equally effective in receiving pollen grains per unit length...
February 5, 2024: Plant Biology
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