Morphological, Physiological, and Biochemical Impacts of Different Levels of Long-Term Water Deficit Stress on Linum album Ky. ex Boiss. Accessions

Abstract

Linum album (Ky. ex Boiss.) is an important medicinal plant that produces compounds such as the well-known anticancer lignan podophyllotoxin and fatty acids. Despite its high medicinal value, it has not yet been studied in detail under agricultural conditions. This study was conducted to evaluate the morphological, phenological, and physiological responses of six L. album accessions under different levels of water deficit treatments (100%, 75%, 50%, and 25% available water) in pot conditions. Based on the results, some of the morphological characteristics of the response to water deficit were established. Accessions UTLA7, UTLA9, and UTLA10 showed a higher seed yield and dry weight of the vegetative part. There was a substantial difference in the occurrence of phenological stages in the accessions. The maturation process was accelerated in plants under stress conditions, and accession UTLA9 completed its complete growth cycle faster than the other accessions. The physiological responses of the different accessions did not show the same pattern on the basis of the characteristics studied, and significant differences were observed depending on the trait and accession. Among the most important results of this study was the diversity of responses in different accessions. Based on these results, it is recommended that morphological features (such as seed yield per plant, plant height, number of inflorescences per plant, shoot and root dry weight) be used to select tolerant accessions for the desired product.

The older, the better: Ageing improves the efficiency of biochar-compost mixture to alleviate drought stress in plant and soil

“…In accordance with a reduction of their physiological functions, leaf proline content was found to be increased, (Liu et al, 2015;Luo et al, 2019;Mouradi et al, 2018;Kiani et al, 2020). Such accumulation of proline helps prevent cell damage, stabilizes molecules, maintains osmotic potential and stores carbon and nitrogen for a potential use after stress removal (Szabados and Savouré, 2010;Ben Rejeb et al, 2014;Luo et al, 2019;Kiani et al, 2020;Khan et al, 2021). In the rhizosphere, overall reduction of microbial enzyme activities under water stress was already observed in previous studies (Sanaullah et al, 2011;Zaheer et al, 2021).…”

“…The decrease of nodules can be related to lower photosynthesis activity and thus carbohydrate production by the plant (Aranjuelo et al, 2014). In accordance with a reduction of their physiological functions, leaf proline content was found to be increased, (Liu et al, 2015;Luo et al, 2019;Mouradi et al, 2018;Kiani et al, 2020). Such accumulation of proline helps prevent cell damage, stabilizes molecules, maintains osmotic potential and stores carbon and nitrogen for a potential use after stress removal (Szabados and Savouré, 2010;Ben Rejeb et al, 2014;Luo et al, 2019;Kiani et al, 2020;Khan et al, 2021).…”

Salt Tolerance of Sea Flax (Linum maritimum L.), a Rare Species with Conservation Interest in Eastern Spain

“…In L. maritimum , only low levels of Pro were detected in comparison to those reported in flaxseed [ 62 ], but another common osmolyte in plants, glycine betaine, was present in higher concentrations and showed a significant variation in response to the change in the substrate salinity, as also reported in flax [ 71 ] and Linum album , an endemic from Iran with medicinal properties [ 72 ]. However, in this latter species, the reported GB concentrations were much higher than in L. maritium or L. usitatissimum and similar to those measured in plants that are typical glycine betaine accumulators [ 73 ].…”

Comprehensive RNA-Seq-based study and metabolite profiling to identify genes involved in podophyllotoxin biosynthesis in Linum album Kotschy ex Boiss. (Linaceae)

“…in vitro [47][48][49][50] . Also, a study carried out on different accessions of L. album under drought stress presented different patterns based on physiological and biochemical responses 51 .…”