Responses to nonaeration and/or salinity stress in hydroponically cultured Populus nigra and Populus alba cuttings

Mao, Hui Ping; Okada, Yasuhisa; Michimata, Shizuka; Wen, Wei; Iwanaga, Fumiko; Yamanaka, Norikazu; Yamamoto, Fukuju

doi:10.1007/s11355-009-0073-8

Cited by 3 publications

(1 citation statement)

References 32 publications

(38 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first symptoms of salt stress that we noticed in this study were the edges of the leaf blade drying out, and older leaves dropping. Mao et al (2010) also observed drying of the tips and edges of the leaf blade, and a significant loss of leaves (up to 50%) of two-year-old black poplar plants treated for four weeks with 100 mM NaCl solution. Significant differences in susceptibility to salt stress were found in various species of poplars, in the form of growth inhibition and leaf damage, as well as physiological disorders related to metabolic functions (Chen and Polle 2010;Polle and Chen 2015;Sixto et al 2005).…”

Section: Discussionmentioning

confidence: 85%

Influence of drought and salt stress on the growth of young Populus nigra ‘Italica’ plants and associated mycorrhizal fungi and non-mycorrhizal fungal endophytes

Kulczyk-Skrzeszewska

Kieliszewska-Rokicka

2021

New Forests

View full text Add to dashboard Cite

Populus nigra ‘Italica’ (Lombardy poplar) is a breeding cultivar of black poplar, widely used as a street tree or windbreak, often exposed to salinity and limited water availability. Populus roots can develop dual mycorrhizal associations with ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) fungi, and with non-mycorrhizal fungal endophytes (FE). The symbiotic fungi may alleviate the effects of adverse environmental conditions. We investigated the performance (growth and symbiotic associations) of one-year-old Populus nigra ‘Italica’ grown from woody cuttings in soil from natural poplar habitat and subjected to water scarcity and soil salinity (50 mM NaCl, 150 mM NaCl, 250 mM NaCl). With increasing soil salinity, a decrease in the growth parameters of the aboveground parts of the poplar plantlets and their fine roots were found; however, the roots were more resistant to the stress factors analyzed than the shoots. ECMF, AMF, and non-mycorrhizal FE were all tolerant to increased salt levels in the soil, and the ECM abundance was significantly higher under conditions of mild salinity (50 mM NaCl, 150 mM NaCl) compared to the control plants and those treated with 250 mM NaCl. Our results indicated that enhanced soil salinity increased the content of sodium and chlorine in leaves, but did not affect significantly the concentrations potassium, magnesium, calcium, phosphorus, or nitrogen. Significant accumulation of proline in leaves suggest salt stress of P. nigra ‘Italica’ treated with 250 mM NaCl and contribution of proline to the plant defense reactions.

show abstract

Section: Discussionmentioning

confidence: 85%

Influence of drought and salt stress on the growth of young Populus nigra ‘Italica’ plants and associated mycorrhizal fungi and non-mycorrhizal fungal endophytes

Kulczyk-Skrzeszewska

Kieliszewska-Rokicka

2021

New Forests

View full text Add to dashboard Cite

show abstract

Assessment of the salinity tolerance, response mechanisms and nutritional imbalance to heterogeneous salt supply in Populus alba L. clone ‘Marte’ using a split-root system

Della Maggiora,

Francini,

Giovannelli

et al. 2023

Plant Growth Regul

View full text Add to dashboard Cite

Salinity responses of Populus alba L. clone ‘Marte’ were evaluated using a split-root system to simulate the heterogeneous soil conditions in the field and to assess the salinity tolerance of clone ‘Marte’. During the 26 days of experiment, we measured morpho-physiological parameters as well as the mineral content in substrate and plant organs in split-root plants watered with no salt on both sides of the system (0/0 mM - S1), salt on one side (0/100 mM – S2) and salt on both sides (100/100 mM – S3). Shoot elongation, stem diameter increase, and number of new leaves were not significantly different among and within each salt treatment. Leaf relative chlorophyll content and chlorophyll a fluorescence did not show any difference, while there was a decrease of 85% in terms of net photosynthesis (Pn) and 88% in stomatal conductance (gs) in S3 plants compared to S1. Na, absorbed by one side of the 0/100 mM plants, was equally distributed in all aerial organs and reached a concentration in-between the other two groups, as a confirmation of the physiological results obtained. An increase in Mn concentrations in woody cutting, stems and leaves of S2 and S3 system compared to S1 group was observed. Moreover, S3 plants showed an increase of K concentration in leaves. In ‘Marte’ poplar, Na increment was only translated in a reduction of photosyntetic performances, and the increase of some key mineral elements at leaf level such as K and Mn suggested an attempt to overcome the stress.

show abstract

Comparative study of transcriptional and physiological responses to salinity stress in two contrasting Populus alba L. genotypes

Beritognolo¹,

Harfouche²,

Brilli³

et al. 2011

Tree Physiology

View full text Add to dashboard Cite

Soil salinity is an important limiting factor to tree growth and productivity. Populus alba L. is a moderately salt-tolerant species and its natural populations are adapted to contrasting environments, thus providing genetic resources to identify key genes for tolerance to abiotic stress, such as salinity. To elucidate the molecular and genetic basis of variation for salinity tolerance in P. alba, we analyzed the short-term ecophysiological and transcriptome response to salinity. Two contrasting genotypes, 6K3, salt sensitive, and 14P11, salt tolerant, originating from North and South Italy, respectively, were challenged with salt stress (200 mM NaCl). Sodium accumulated in the leaves of salt-treated plants and its concentration increased with time. The net photosynthesis was strongly reduced by salinity in both genotypes, with 6K3 being significantly more affected than 14P11. The transcriptional changes in leaves were analyzed using cDNA microarrays containing about 7000 stress-related poplar expressed sequence tags (EST). A microarray experiment based on RNA pooling showed a number of salinity--regulated transcripts that markedly increased from 3 h to 3 days of salinity treatment. Thus, a detailed analysis was performed on replicated plants collected at 3 days, when ~20% of transcripts showed significant change induced by salinity. In 6K3, there were more genes with decreased expression than genes with increased expression, whereas such a difference was not found in 14P11. Most transcripts with decreased expression were shared between the two genotypes, whereas transcripts with increased expression were mostly regulated in a genotype-specific manner. The commonly decreased transcripts (71 genes) were functionally related to carbohydrate metabolism, energy metabolism and photosynthesis. These biological processes were consistent with the strong inhibition of photosynthesis, caused by salinity. The commonly increased transcripts (13 genes) were functionally related to primary metabolism and biosynthesis of proteins and macromolecules. The salinity-increased transcripts discriminated the molecular response of the two genotypes. In 14P11, the 21 genes specifically salinity-induced were related to stress response, cell development, cell death and catabolism. In 6K3, the 15 genes with salinity-increased expression were involved in protein biosynthesis, metabolism of macromolecules and cell organization and biogenesis. The difference in transcriptome response between the two genotypes could address the molecular basis of intra-specific variation of salinity tolerance in P. alba.

show abstract

Responses to nonaeration and/or salinity stress in hydroponically cultured Populus nigra and Populus alba cuttings

Cited by 3 publications

References 32 publications

Influence of drought and salt stress on the growth of young Populus nigra ‘Italica’ plants and associated mycorrhizal fungi and non-mycorrhizal fungal endophytes

Influence of drought and salt stress on the growth of young Populus nigra ‘Italica’ plants and associated mycorrhizal fungi and non-mycorrhizal fungal endophytes

Assessment of the salinity tolerance, response mechanisms and nutritional imbalance to heterogeneous salt supply in Populus alba L. clone ‘Marte’ using a split-root system

Comparative study of transcriptional and physiological responses to salinity stress in two contrasting Populus alba L. genotypes

Contact Info

Product

Resources

About