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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- Botany & plant sciences --- leaf senescence --- stay green --- environmental stress --- phytohormones --- transcription factors --- leaf senescence --- stay green --- environmental stress --- phytohormones --- transcription factors

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Hydrogen sulfide (H2S), which was previously considered to be toxic, is now regarded as a burgeoning endogenous gaseous transmitter. H2S plays a vital role in the mechanism of response/adaptation to adverse environmental conditions as well as crosstalk with other signaling molecules, including ROS, by affecting the corresponding gene expression and subsequent enzyme activities. Both H2S and ROS are potent signaling molecules that can provoke reversible and irreversible oxidative post-translational modifications on cysteine residues of proteins such as sulfenylation or persulfidation, affecting the redox status and function of the target proteins. The dynamic interplay between persulfidation and sulfenylation occurring on cysteine residues is of great importance in response to environmental changes.The present Special Issue of IJMS has the aim of providing the most current findings on the function of signaling molecules, including H2S and ROS, in higher plants, and it is open to different types of manuscripts, including original research papers, perspectives, or reviews where either ROS, H2S, or related molecules could be involved at the biochemical or physiological levels.

Mathematics & science --- Biology, life sciences --- Molecular biology --- antioxidant defense systems --- Cd stress --- hydrogen sulfide --- melatonin --- oxidative stress --- transportation and sequestration --- nitric oxide --- abscisic acid --- Ca2+ --- hydrogen peroxide --- abiotic stresses --- signal transmitters --- stomatal movement --- persulfidation --- drought stress --- nitrate reductase --- l-cysteine desulfhydrase --- chilling stress --- indole-3-acetic acid --- signaling pathway --- calcium deficiency --- endogenous H2S --- reactive oxygen species --- ERF2-bHLH2-CML5 module --- postharvest storage quality --- tomato --- cysteine desulfhydrase --- leaf senescence --- ARF --- auxin --- cold stress --- cucumber --- DREB --- module --- resistance --- root growth --- heavy metal --- salt --- DES1 --- ABI4 --- protein stability --- Brassica rapa --- mercury --- selenium --- biotic stress --- abiotic stress --- salicylic acid --- jasmonic acid --- ethylene --- phytohormones --- Arabidopsis --- manganese stress --- L-cysteine desulfhydrase --- antioxidant enzyme --- Allium --- garlic --- gas detector --- ion-selective microelectrode --- isozymes --- RBOHs --- signaling networks --- n/a

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Plants provide the foundation for the structure and function, as well as interactions, among organisms in both tropical and temperate zone habitats. To date, many investigations have revealed patterns and mechanisms generating plant diversity at various scales and from diverse ecological perspectives. However, in the era of climate change, anthropogenic disturbance, and rapid urbanization, new insights are needed to understand how plant species in these forest habitats are changing and adapting. Investigations of plants in both little-disturbed, more natural environments, as well as in urban areas in which crucial green infrastructure is ever more important for sustaining complex human societies are needed. This Special Issue of Forests will focus on plant variation from the perspectives of morphology, genetics, and function, especially plant interactions with biotic and abiotic factors. Research articles may address any aspect of plant evolution and community phylogenetics (explorations of patterns and mechanisms from diverse organismal levels, e.g., molecular, population, species, community, landscape, and ecosystem), plant functional traits (e.g., nutrient traits of leaf, stem, root; reproductive traits of flower, fruit, seed), and/or responses of plant species to changing environments (e.g., water, atmosphere, soil, human activities). Studies providing quantitative evaluation or description of interactions of plants with animals and microbes, both in natural and urban environments, including terrestrial and aquatic systems, are also welcome.

Research & information: general --- Biology, life sciences --- Forestry & related industries --- Hevea brasiliensis Müll. Arg. --- HbMad-box genes --- conserved domains --- gene structures --- expression profiles --- stress treatments --- microsatellite locus --- Hardy-Weinberg equilibrium --- genetic differentiation --- breeding population --- artificial selection --- Aegle marmelos (L.) Corr. --- transcripts --- transcriptome assembly --- simple sequence repeats --- transcription factors --- cytochrome p450 --- glycotransferases --- metabolic pathway --- grafting --- pecan --- miRNA --- graft union --- sequencing --- edible forest product --- forest biology --- macro-fungi --- non-timber forest products (NTFPs) --- Pan-Pearl River Delta --- allometry --- anatomy --- Polygonatum odoratum --- Polygonatum multiflorum --- shape --- shoot --- endophytes --- medicinal plants --- pathogen --- molecular identification --- plant-microbe interaction --- gas exchange --- chlorophyll fluorescence --- growth trait --- genetic variation --- early selection --- pedunculate oak --- drought --- stress --- memory --- flushing --- autumn leaf senescence --- phenological shift --- carry-over effect --- mangroves --- DNA barcoding --- species identification --- phylogenetic relation --- moso bamboo --- heat shock factor gene --- abiotic stresses --- co-expression --- yellow-green leaf mutant --- transcriptome --- antenna protein --- photosynthesis --- birch --- Dalbergia odorifera T. Chen --- genetic diversity --- population structure --- EST-SSR marker --- microsatellite marker --- rosewood --- conservation --- Pinus massoniana --- introgression hybrid --- RNA sequencing --- DEGs --- reproduction --- phenology --- leafing out --- flowering --- senescence --- cumulative logistic regression --- hawthorn --- provenance trial --- non-local populations --- variance analysis --- lime application --- understory removal --- microbial community --- forest management --- Eucalyptus --- protogyny (PG) --- protandry (PA) --- pollen viability --- seed success --- polyploidy --- phosphate solubilizing bacteria --- nutrition --- oil tea --- Lagerstroemia species --- simple sequence repeat markers --- bulked segregant analysis --- creeping trait --- plant architecture --- climate change --- forest biodiversity --- plant–environment interactions --- plant traits --- urbanization --- Hevea brasiliensis Müll. Arg. --- HbMad-box genes --- conserved domains --- gene structures --- expression profiles --- stress treatments --- microsatellite locus --- Hardy-Weinberg equilibrium --- genetic differentiation --- breeding population --- artificial selection --- Aegle marmelos (L.) Corr. --- transcripts --- transcriptome assembly --- simple sequence repeats --- transcription factors --- cytochrome p450 --- glycotransferases --- metabolic pathway --- grafting --- pecan --- miRNA --- graft union --- sequencing --- edible forest product --- forest biology --- macro-fungi --- non-timber forest products (NTFPs) --- Pan-Pearl River Delta --- allometry --- anatomy --- Polygonatum odoratum --- Polygonatum multiflorum --- shape --- shoot --- endophytes --- medicinal plants --- pathogen --- molecular identification --- plant-microbe interaction --- gas exchange --- chlorophyll fluorescence --- growth trait --- genetic variation --- early selection --- pedunculate oak --- drought --- stress --- memory --- flushing --- autumn leaf senescence --- phenological shift --- carry-over effect --- mangroves --- DNA barcoding --- species identification --- phylogenetic relation --- moso bamboo --- heat shock factor gene --- abiotic stresses --- co-expression --- yellow-green leaf mutant --- transcriptome --- antenna protein --- photosynthesis --- birch --- Dalbergia odorifera T. Chen --- genetic diversity --- population structure --- EST-SSR marker --- microsatellite marker --- rosewood --- conservation --- Pinus massoniana --- introgression hybrid --- RNA sequencing --- DEGs --- reproduction --- phenology --- leafing out --- flowering --- senescence --- cumulative logistic regression --- hawthorn --- provenance trial --- non-local populations --- variance analysis --- lime application --- understory removal --- microbial community --- forest management --- Eucalyptus --- protogyny (PG) --- protandry (PA) --- pollen viability --- seed success --- polyploidy --- phosphate solubilizing bacteria --- nutrition --- oil tea --- Lagerstroemia species --- simple sequence repeat markers --- bulked segregant analysis --- creeping trait --- plant architecture --- climate change --- forest biodiversity --- plant–environment interactions --- plant traits --- urbanization

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This volume presents recent research achievements concerning the molecular genetic basis of agronomic traits in rice. Rice (Oryza sativa L.) is the most important food crop in the world, being a staple food for more than half of the world’s population. Recent improvements in living standards have increased the worldwide demand for high-yielding and high-quality rice cultivars. To achieve improved agricultural performance in rice, while overcoming the challenges presented by climate change, it is essential to understand the molecular basis of agronomically important traits. Recently developed techniques in molecular biology, especially in genomics and other related omics fields, can reveal the complex molecular mechanisms involved in the control of agronomic traits. As rice was the first crop genome to be sequenced, in 2004, molecular research tools for rice are well-established, and further molecular studies will enable the development of novel rice cultivars with superior agronomic performance.

Research & information: general --- Biology, life sciences --- Technology, engineering, agriculture --- chloroplast RNA splicing and ribosome maturation (CRM) domain --- intron splicing --- chloroplast development --- rice --- rice (Oryza sativa L.), grain size and weight --- Insertion/Deletion (InDel) markers --- multi-gene allele contributions --- genetic variation --- rice germplasm --- disease resistance --- microbe-associated molecular pattern (MAMP) --- Pyricularia oryzae (formerly Magnaporthe oryzae) --- Oryza sativa (rice) --- receptor-like cytoplasmic kinase (RLCK) --- reactive oxygen species (ROS) --- salinity --- osmotic stress --- combined stress --- GABA --- phenolic metabolism --- CIPKs genes --- shoot apical meristem --- transcriptomic analysis --- co-expression network --- tiller --- nitrogen rate --- rice (Oryza sativa L.) --- quantitative trait locus --- grain protein content --- single nucleotide polymorphism --- residual heterozygote --- rice (Oryza sativa) --- specific length amplified fragment sequencing --- Kjeldahl nitrogen determination --- near infrared reflectance spectroscopy --- heterosis --- yield components --- high-throughput sequence --- FW2.2-like gene --- tiller number --- grain yield --- CRISPR/Cas9 --- genome editing --- off-target effect --- heat stress --- transcriptome --- anther --- anthesis --- pyramiding --- bacterial blight --- marker-assisted selection --- foreground selection --- background selection --- japonica rice --- cold stress --- germinability --- high-density linkage map --- QTLs --- seed dormancy --- ABA --- seed germination --- chromosome segment substitution lines --- linkage mapping --- Oryza sativa L. --- chilling stress --- chlorophyll biosynthesis --- chloroplast biogenesis --- epidermal characteristics --- AAA-ATPase --- salicylic acid --- fatty acid --- Magnaporthe oryzae --- leaf senescence --- quantitative trait loci --- transcriptome analysis --- genetic --- epigenetic --- global methylation --- transgenic --- phenotype --- OsNAR2.1 --- dwarfism --- OsCYP96B4 --- metabolomics --- NMR --- qRT-PCR --- bHLH transcription factor --- lamina joint --- leaf angle --- long grain --- brassinosteroid signaling --- blast disease --- partial resistance --- pi21 --- haplotype --- high night temperature --- wet season --- dry season --- chloroplast RNA splicing and ribosome maturation (CRM) domain --- intron splicing --- chloroplast development --- rice --- rice (Oryza sativa L.), grain size and weight --- Insertion/Deletion (InDel) markers --- multi-gene allele contributions --- genetic variation --- rice germplasm --- disease resistance --- microbe-associated molecular pattern (MAMP) --- Pyricularia oryzae (formerly Magnaporthe oryzae) --- Oryza sativa (rice) --- receptor-like cytoplasmic kinase (RLCK) --- reactive oxygen species (ROS) --- salinity --- osmotic stress --- combined stress --- GABA --- phenolic metabolism --- CIPKs genes --- shoot apical meristem --- transcriptomic analysis --- co-expression network --- tiller --- nitrogen rate --- rice (Oryza sativa L.) --- quantitative trait locus --- grain protein content --- single nucleotide polymorphism --- residual heterozygote --- rice (Oryza sativa) --- specific length amplified fragment sequencing --- Kjeldahl nitrogen determination --- near infrared reflectance spectroscopy --- heterosis --- yield components --- high-throughput sequence --- FW2.2-like gene --- tiller number --- grain yield --- CRISPR/Cas9 --- genome editing --- off-target effect --- heat stress --- transcriptome --- anther --- anthesis --- pyramiding --- bacterial blight --- marker-assisted selection --- foreground selection --- background selection --- japonica rice --- cold stress --- germinability --- high-density linkage map --- QTLs --- seed dormancy --- ABA --- seed germination --- chromosome segment substitution lines --- linkage mapping --- Oryza sativa L. --- chilling stress --- chlorophyll biosynthesis --- chloroplast biogenesis --- epidermal characteristics --- AAA-ATPase --- salicylic acid --- fatty acid --- Magnaporthe oryzae --- leaf senescence --- quantitative trait loci --- transcriptome analysis --- genetic --- epigenetic --- global methylation --- transgenic --- phenotype --- OsNAR2.1 --- dwarfism --- OsCYP96B4 --- metabolomics --- NMR --- qRT-PCR --- bHLH transcription factor --- lamina joint --- leaf angle --- long grain --- brassinosteroid signaling --- blast disease --- partial resistance --- pi21 --- haplotype --- high night temperature --- wet season --- dry season