Physiological and Proteomic Responses of Diploid and Tetraploid Black Locust (Robinia pseudoacacia L.)  Subjected to Salt Stress

Wang, Zhiming; Wang, Mingyue; Liu, Likun; Meng, Fanjuan

doi:10.3390/ijms141020299

Cited by 112 publications

(89 citation statements)

References 45 publications

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“…Similarly, these parameters were reported to be superior for tetraploid black locust even under salt stress (Wang et al, 2013b). In earlier studies on the polyploids of Atriplex confertifolia, photosynthetic rates per cell were highly correlated with ploidy level and with the Figure 13.…”

Section: Duplication Of the Willow Genome Directs Leaf Functions Towamentioning

confidence: 99%

“…This work provides a detailed characterization of autotetraploids to extend our knowledge about the morphological and developmental consequences of artificial genome duplication in this short-rotation energy willow. Autotetraploid woody crops have been produced in several species, including Populus tremula and Populus pseudo-simonii (Ewald et al, 2009;Cai and Kang, 2011), Paulownia tomentosa (Tang et al, 2010), Acacia dealbata and Acacia mangium (Blakesley et al, 2002), R. pseudoacacia (Ewald et al, 2009;Harbard et al, 2012;Wang et al, 2013aWang et al, , 2013b, and Betula platyphylla (Mu et al, 2012). Colchicine, a microtubule polymerization inhibitor, has been used in a variety of methodologies involving the treatment of seeds or apical meristems of germinated seedlings.…”

Section: Identification Of Energy Willow Variants With Duplicated Genmentioning

confidence: 99%

“…], black locust [Robinia pseudoacacia], Paulownia spp., and birch [Betula spp. ]), doubling the chromosome set by colchicine treatment can cause significant changes in organ morphology or growth parameters (Tang et al, 2010;Cai and Kang, 2011;Harbard et al, 2012;Mu et al, 2012;Wang et al, 2013aWang et al, , 2013b. In several polyploidization protocols, the in vitro cultured tissues are exposed to different doses of colchicine or other inhibitors of mitotic microtubule function, and plantlets are differentiated from polyploid somatic cells (Tang et al, 2010;Cai and Kang, 2011).…”

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Response of Organ Structure and Physiology to Autotetraploidization in Early Development of Energy Willow Salix viminalis

et al. 2016

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The biomass productivity of the energy willow Salix viminalis as a short-rotation woody crop depends on organ structure and functions that are under the control of genome size. Colchicine treatment of axillary buds resulted in a set of autotetraploid S. viminalis var. Energo genotypes (polyploid Energo [PP-E]; 2n = 4x = 76) with variation in the green pixel-based shoot surface area. In cases where increased shoot biomass was observed, it was primarily derived from larger leaf size and wider stem diameter. Autotetraploidy slowed primary growth and increased shoot diameter (a parameter of secondary growth). The duplicated genome size enlarged bark and wood layers in twigs sampled in the field. The PP-E plants developed wider leaves with thicker midrib and enlarged palisade parenchyma cells. Autotetraploid leaves contained significantly increased amounts of active gibberellins, cytokinins, salicylic acid, and jasmonate compared with diploid individuals. Greater net photosynthetic CO 2 uptake was detected in leaves of PP-E plants with increased chlorophyll and carotenoid contents. Improved photosynthetic functions in tetraploids were also shown by more efficient electron transport rates of photosystems I and II. Autotetraploidization increased the biomass of the root system of PP-E plants relative to diploids. Sections of tetraploid roots showed thickening with enlarged cortex cells. Elevated amounts of indole acetic acid, active cytokinins, active gibberellin, and salicylic acid were detected in the root tips of these plants. The presented variation in traits of tetraploid willow genotypes provides a basis to use autopolyploidization as a chromosome engineering technique to alter the organ development of energy plants in order to improve biomass productivity.

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Section: Duplication Of the Willow Genome Directs Leaf Functions Towamentioning

confidence: 99%

Section: Identification Of Energy Willow Variants With Duplicated Genmentioning

confidence: 99%

mentioning

confidence: 99%

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Response of Organ Structure and Physiology to Autotetraploidization in Early Development of Energy Willow Salix viminalis

et al. 2016

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“…Growth was unaffected in Populus euphratica at low-moderate salinity (68 mM), and at 137 mM NaCl, 50 % of Populus deltoids × Populus alba "M31" and 100 % of Populus alba "GuadalquivirF-21-40," Populus alba "GuadalquivirF-21-39," Populus alba "GuadalquivirF-21-38," and Populus euphratica (100 %) survived [172] Robinia pseudoacacia C3 High (in 4n) Tetraploid black locust can withstand high levels of NaCl and Na 2 SO 4 to a greater extent than diploid black locust (e.g., salt injury not observed, no change in water or chlorophyll content, or photosynthesis rate and intercellular CO 2 concentration in 4n). Potentially adaptive changes in leaf anatomy were seen in tetraploid type in response to salinity [173], with the tetraploid version being much more adaptable to salt stress than the diploid [174].…”

Section: C4mentioning

confidence: 99%

Stress-Tolerant Feedstocks for Sustainable Bioenergy Production on Marginal Land

et al. 2015

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Given the mandated increases in fuel production from alternative sources, limited high-quality production land, and predicted climate changes, identification of stress-tolerant biomass crops will be increasingly important. However, existing literature largely focuses on the responses of a small number of crops to a single source of abiotic stress. Here, we provide a much-needed review of several types of stress likely to be encountered by biomass crops on marginal lands and under future climate scenarios: drought, flooding, salinity, cold, and heat. The stress responses of 17 leading biomass crops of all growth habits (e.g., perennial grasses, shortrotation woody crops, and large trees) are summarized, and we identify several that could be considered "all purpose" for multiple stress types. Importantly, we note that some of these crops are or could become invasive in some landscapes. Therefore, growers must take care to avoid dissemination of plants or propagules outside of cultivation.

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“…A major challenge now is to determine the molecular events that bind WGD to this enhanced stress tolerance. It appears that the key tissue to investigate is the root, where salinity and drought tolerance meet potassium homeostasis and ABA signaling (Saleh et al, 2008;Meng et al, 2011;Allario et al, 2013;Chao et al, 2013;Wang et al, 2013;del Pozo and Ramirez-Parra, 2014). Work there promises to reveal mechanistically how WGD has an immediate effect on cellular physiology that is independent of increased genetic diversity.…”

Section: Instantly Altered Physiological Propertiesmentioning

confidence: 99%

The “Polyploid Hop”: Shifting Challenges and Opportunities Over the Evolutionary Lifespan of Genome Duplications

et al. 2018

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The duplication of an entire genome is no small affair. Whole genome duplication (WGD) is a dramatic mutation with long-lasting effects, yet it occurs repeatedly in all eukaryotic kingdoms. Plants are particularly rich in documented WGDs, with recent and ancient polyploidization events in all major extant lineages. However, challenges immediately following WGD, such as the maintenance of stable chromosome segregation or detrimental ecological interactions with diploid progenitors, commonly do not permit establishment of nascent polyploids. Despite these immediate issues some lineages nevertheless persist and thrive. In fact, ecological modeling commonly supports patterns of adaptive niche differentiation in polyploids, with young polyploids often invading new niches and leaving their diploid progenitors behind. In line with these observations of polyploid evolutionary success, recent work documents instant physiological consequences of WGD associated with increased dehydration stress tolerance in first-generation autotetraploids. Furthermore, population genetic theory predicts both short-and long-term benefits of polyploidy and new empirical data suggests that established polyploids may act as "sponges" accumulating adaptive allelic diversity. In addition to their increased genetic variability, introgression with other tetraploid lineages, diploid progenitors, or even other species, further increases the available pool of genetic variants to polyploids. Despite this, the evolutionary advantages of polyploidy are still questioned, and the debate over the idea of polyploidy as an evolutionary dead-end carries on. Here we broadly synthesize the newest empirical data moving this debate forward. Altogether, evidence suggests that if early barriers are overcome, WGD can offer instantaneous fitness advantages opening the way to a transformed fitness landscape by sampling a higher diversity of alleles, including some already preadapted to their local environment. This occurs in the context of intragenomic, population genomic, and physiological modifications that can, on occasion, offer an evolutionary edge. Yet in the long run, early advantages can turn into long-term hindrances, and without ecological drivers such as novel ecological niche availability or agricultural propagation, a restabilization of the genome via diploidization will begin the cycle anew.

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Physiological and Proteomic Responses of Diploid and Tetraploid Black Locust (Robinia pseudoacacia L.) Subjected to Salt Stress

Cited by 112 publications

References 45 publications

Response of Organ Structure and Physiology to Autotetraploidization in Early Development of Energy Willow Salix viminalis

Response of Organ Structure and Physiology to Autotetraploidization in Early Development of Energy Willow Salix viminalis

Stress-Tolerant Feedstocks for Sustainable Bioenergy Production on Marginal Land

The “Polyploid Hop”: Shifting Challenges and Opportunities Over the Evolutionary Lifespan of Genome Duplications

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