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The papers included in this Special Issue address a variety of important aspects of Genetics, Genomics and Biotechnology of Plant Cytoplasmic Organelles, including new advances in the sequencing of both mitochondria and chloroplasts’ genomes using Next-Generation Sequencing technology in plant species and algae including important crop and tree species, in vitro culture protocol, and identification of a core module of genes involved in plastid development. In particular, the published studies focus on the description of adaptive evolution, elucidate mitochondrial mRNA processing, highlight the effect of domestication process on plastome variability and report the development of molecular markers. A meta-analysis of recently published genome-wide expression studies allowed the identification of novel nuclear genes, involved in the complex and still unrevealed mechanisms at the basis of communication between chloroplast and nucleus (retrograde signalling) during plastid development (biogenic control). Finally, an optimized regeneration protocol useful in plastid transformation of recalcitrant species, such as sugarcane, has been reported.
mitochondrial genome --- buckwheat --- plastid genome --- genetic diversity --- long reads --- targeted assembly --- genome assembly --- Fagus --- Fagaceae --- Fagales --- molecular marker --- mitochondrial marker --- taxon assignment --- CAPS marker --- SNP --- next-generation sequencing --- Solanum --- Italian landraces --- plastome --- molecular markers --- phylogenetic analysis --- plastid transformation --- sugarcane --- unfurled leaves --- streptomycin --- heteroplasmy --- mesophyll and bundle sheath cells --- plastids --- photomorphogenesis --- retrograde control --- biogenic signals --- lincomycin --- norflurazon --- pap7-1 mutant --- mitochondria --- RNA processing --- algal evolution --- circular RNA --- polycytidylation --- PacBio Iso-Seq --- Capparaceae --- chloroplast genome --- Cadaba --- Maerua --- phylogenetic relationships
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Hardwood-dominated temperate forests (mostly in Eastern North America, Europe, North East Asia) provide valuable renewable timber and numerous ecosystem services. Many of these forests have been subjected to harvesting or conversion to agriculture, sometimes over centuries, that have greatly reduced their former extent and diversity. Natural regeneration following harvesting or during post-agricultural succession has often failed to restore these forests adequately. Past harvesting practices and the valuable timber of some species have led to a reduction in their abundance. The loss of apex predators has caused herbivore populations to increase and exert intense browsing pressure on hardwood regeneration, often preventing it. Particularly important are fruit, nut and acorn bearing species, because of their vital role in forest food webs and biodiversity. Restoring hardwood species to natural forests in which they were formerly more abundant will require a number of forest management actions (e.g., resistant hybrids, deer exclosures/protectors, enrichment planting, underplanting, etc.). Similarly, reforesting areas that were once natural forests will also require new silvicultural knowledge. Global warming trends will intensify the need for interventions to maintain the diversity and function of temperate hardwood forests, as well as for increase hardwood reforestation.
Fagaceae species --- soil disturbance --- non-timber forest products --- precision restoration --- protected landscape area --- tree selection --- cultural diversity --- Quercus rubra --- hardwood restoration --- enrichment planting --- sub-tropical hardwoods --- agroforestry --- herbicide effects --- biological diversity --- competition --- Juglans nigra L. --- understorey --- invasive plants --- wildfire --- forest restoration --- Quercus macrocarpa --- riparian forest restoration --- vegetation management --- assisted migration --- sugar maple --- deer browsing --- species composition --- tolerance --- phosphorus --- growth efficiency index --- floristic quality index --- shelterwood --- Carya cordiformis (Wangenh.) K. Koch --- monitoring --- indicators --- seed predation --- Bioclimatic niche --- non-parametric correlation --- unmanaged forest --- Native Americans --- abandoned agricultural field --- native mixed forests --- tree vigor --- forest diversity --- predation --- weed control --- nitrate --- facilitation --- inventory --- hardwoods --- Mexican tree species --- yellow birch --- tree plantation --- seedling establishment --- deer abundance --- avian guilds --- Pinus strobus L. --- Central Hardwood Forest region --- Pinus strobus --- Durango --- MaxEnt --- Juglans nigra --- oak regeneration --- forest regeneration --- Quercus rubra L. --- deer herbivory --- ecosystem services --- tree shelter
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