Strategies for Adaptation of Suaeda physophora, Haloxylon ammodendron and Haloxylon persicum to a Saline Environment During Seed-Germination Stage

Song, Jie; Feng, Gu; Chen, Tian; Zhang, Fusuo

doi:10.1093/aob/mci196

Cited by 185 publications

(170 citation statements)

References 23 publications

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“…It is well known that the seedlings of Amaranthaceae species in saline areas must resist the impact of the harsh environment, such as drought, waterlogging, and high salt (Song et al, 2005;Wang et al, 2008;Zhang et al, 2015). The number of seed germinated in the field is usually very high, but most of them cannot survive; therefore, a certain number of seeds is needed to ensure the reproduction of the next generation's population (Wang et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…The main treatments included five salt concentrations: 0, 50, 100, 200 and 400 mM. The salt concentrations were set according to a field survey and the results from a previous experiment (Song et al, 2005). Each salt treatment had three AMF treatments: control (C), Ge inoculation and Gm inoculation.…”

Section: Experimental Designmentioning

confidence: 99%

“…Additionally, S. physophora has high nutritional value as forage or fodder crop; therefore, it has important economic value and ecological value and is a good choice for saline agriculture in northwest China. However, the growth of S. physophora in field conditions is frequently not optimal and is often suppressed by salt, drought, nutrient deficiency, and so on (Song et al, 2005(Song et al, , 2006Zhang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Arbuscular Mycorrhizal Fungi Improve the Antioxidative Response and the Seed Production of Suaedoideae Species Suaeda physophora Pall Under Salt Stress

Yang

Yu²,

Zhang

et al. 2016

Not Bot Horti Agrobo

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Arbuscular mycorrhizal fungi (AMF) play a key role in plant growth and survival; however, the influence of AMF on the growth and production of Suaedoideae species is still not well understood. The object of this study was to understand the mechanism of AMF that affects the growth of Suaedoideae species under different saline conditions. The result showed that the Suaedoideae species Suaeda physophora was colonized by the AMF species Glomus etunicatum (Ge) and Glomus mosseae (Gm). AMF significantly increased the activities of superoxide dismutase (SOD) and peroxidase (POD) in S. physophora and reduced the concentrations of malondialdehyde (MDA) and H 2 O 2 in the leaves of S. physophora under salt stress. AMF also improved the aboveground biomass of S. physophora and significantly increased its seed numbers. Moreover, AMF increased the aboveground phosphorus (P) content of S. physophora. No significant difference between the effect of AMF species Ge and Gm on S. physophora growth was observed. These results suggest that AMF can increase the salt resistance of the Suaedoideae species S. physophora by increasing SOD and POD activities, reducing MDA and H 2 O 2 concentrations and increasing P uptake. The results highlight that AMF might play an important role in S. physophora growth and population survival under harsh salt conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Arbuscular Mycorrhizal Fungi Improve the Antioxidative Response and the Seed Production of Suaedoideae Species Suaeda physophora Pall Under Salt Stress

Yang

Yu²,

Zhang

et al. 2016

Not Bot Horti Agrobo

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“…In our study, germination in laboratory condition showed that the highest germination percentage obtained in the non saline conditions and salt stress (Ungar, 1982(Ungar, , 1995Katembe et al, 1998;Khan et al, 2002). Two different mechanisms of these effects had been reported: (i) an osmotic inhibiting one and (ii) ion toxicity (Khan and Rizvi, 1994;Khan and Ungar, 1998;Song et al, 2005). The alfalfa complex shows a large genetic variability due to both natural and human selection under various climates and locations .…”

Section: Discussionmentioning

confidence: 99%

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Benabderrahim

Haddad

Hamza

et al. 1970

Span. j. agric. res.

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Alfalfa (Medicago sativa L.) is one of the most important forage crops in the world. It has been originated from the Caucasus region (Michaud et al., 1988). The species presents purple flowers, a tap root, an erect growth habit, coiled pods and no winter dormancy. This plant improves the yield and quality of the following crops by atmospheric nitrogen fixation (Bruulsema and Christie, 1987 AbstractVariability in germination under controlled conditions with and without salt, seeds characteristics and field emergence were evaluated for 20 landraces of Medicago sativa ssp sativa, a forage legume collected from three sites in Tunisia. Highly significant differences were recorded among the landraces (p < 0.001) for all the characters studied except tegument colour. Number of seeds produced per plant ranged between 378 and 460 seeds g -1 . Emergence responses of seeds were different among landraces and sites and their values ranged between 12 to 45%. Salt stress (150 mM) caused substantial reduction in final and rate of germination of all the landraces with an average decline of 62.4 and 69.7%, respectively. Final germination values ranged from 26.5 to 75.75% when supplied distilled water. However, final germination values ranged from 10.75 to 32.5% when the seeds were exposed to saline water (150 mM). Rate of germination ranged from 12.75 to 63.25% and from 6.25 to 21.25% at non-saline and salt stress, respectively. Cluster analysis separated the 20 landraces into four clusters. Three landraces in the first cluster had the lowest germination and the greatest field emergence. One landrace composed the second cluster and showed both high germination and field emergence. Two landraces in the third cluster presented greater germination and low emergence. The other landraces constituted the fourth cluster and had intermediates emergence and germination.Additional key words: arid land; diversity; salt stress; seeds. Resumen Variabilidad en la germinación y en la emergencia de variedades autóctonas de Medicago sativa en diferentes oasis de TúnezSe evaluó la germinación en laboratorio con y sin estrés salino, así como las características de las semillas y la emergencia de 20 poblaciones de la leguminosa forrajera Medicago sativa ssp sativa, procedentes de tres localidades de Túnez. Se observaron diferencias altamente significativas entre las poblaciones (p < 0,001) en todos los caracteres estudiados excepto en el color del tegumento. El número de semillas por gramo varió entre 378 y 460. La emergencia de las semillas fue diferente entre las poblaciones y las localidades (variaron entre el 12 y el 45%). El estrés salino (150 mM) causó una fuerte reducción en todas las poblaciones, tanto en la germinación final como en el porcentaje de germinación, con una reducción media del 62,4 y 69,7%, respectivamente. Los valores de germinación finales variaron entre 26,5 y 75,75% y entre 10,75 y 32,5% con agua destilada y estrés salino, respectivamente. El porcentaje de germinación varió desde el 12,75 al 63,25% y del 6,25 al 21,25% en ...

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“…In this sense, we detected a negative response to gypsum solutions for only 1 species among the 24 studied species. In contrast, salts more soluble than gypsum have been shown in many studies to exert an inhibitory effect on germination (Pujol et al, 2000;Song et al, 2005). The effect of salts such as NaCl on seed germination has been attributed to both osmotic stress and ion toxicity (Song et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Does gypsum influence seed germination?

Cañadas¹,

Ballesteros²,

Valle³

et al. 2014

Turk J Bot

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Flora inhabiting gypsum outcrops in arid environments shows a high level of specialization. However, the processes involved are still unclear, specifically at the key stage of germination. Here, to assess whether gypsum could chemically influence seed germination, we tested the germination of species according to 3 functional groups: gypsophiles, gypsovags, and calcicoles. A total of 24 taxa were selected, all occurring in gypsum and limestone substrates, under a semiarid and dry Mediterranean climate. Three levels of gypsum (CaSO 4 •2H 2 O) solution (low = 0.5 g/L, medium = 1 g/L, and high = 2.4 g/L) and 1 control treatment of distilled water were tested. Results depended on the particular species rather than on the functional group. We found that gypsum favored germination in some species (Lepidium subulatum L. and Gypsophila struthium L.), whereas significant negative effects appeared for only 1 species (Rosmarinus officinalis L.). In contrast, most of the species studied responded neutrally to gypsum solutions. Our results suggest that chemical features of gypsum could offer an advantage at the germination stage for certain species, rather than posing a constraint for seed germination.

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Strategies for Adaptation of Suaeda physophora, Haloxylon ammodendron and Haloxylon persicum to a Saline Environment During Seed-Germination Stage

Cited by 185 publications

References 23 publications

Arbuscular Mycorrhizal Fungi Improve the Antioxidative Response and the Seed Production of Suaedoideae Species Suaeda physophora Pall Under Salt Stress

Arbuscular Mycorrhizal Fungi Improve the Antioxidative Response and the Seed Production of Suaedoideae Species Suaeda physophora Pall Under Salt Stress

Germination and emergence variability of alfalfa (Medicago sativa L.) landraces collected in Southern Tunisia oases

Does gypsum influence seed germination?

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