Studies on the Bulb Development and Its Physiological Mechanisms in Lilium Oriental Hybrids

Xia, Yuzhuo; Zheng, Hongyu; Huang, C. H.

doi:10.17660/actahortic.2005.673.9

Cited by 10 publications

(8 citation statements)

References 5 publications

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“…In short, the starch and soluble sugars accumulation during the middle period, combined with their positive correlations ( Table 2), suggested that the stolon developed in a stage of high levels of carbohydrate. This result was consistent with the previous observations that starch and soluble sugar contents increased together in daughterbulb formation in lily and tuber initiation in potato (Fernie and Willmitzer, 2001;Xia et al, 2005). Protein is a vital nutrient and closely related to carbohydrate, and the two can be interconverted (Ribeiro et al, 2014).…”

Section: Discussionsupporting

confidence: 93%

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Dynamic Changes in Starch Metabolism and Endogenous Hormones during Stolon Formation in Tulipa edulis

Miao

Zhu

et al. 2016

J. Amer. Soc. Hort. Sci.

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The stolon is the main asexual reproductive organ of the medicinal plant Tulipa edulis and has special morphology. In the greenhouse experiment presented herein, the dynamic changes in carbohydrates and related enzymes, proteins, and endogenous hormones of stolons during T. edulis stolon formation were investigated. The results showed that the content of total soluble sugar, sucrose, reducing sugar, fructose, and starch were all significantly enhanced in the middle period when stolon emerged and maintained at relatively high levels until the later period of stolon formation, while protein content decreased during stolon formation. The activities of amylase (AMY), sucrose phosphate synthase (SPS), and sucrose synthase (SS) peaked in the initial period and were negatively correlated with soluble sugars. However, adenosine diphosphoglucose pyrophosphorylase (AGPase) activity increased as stolon formation progressed, and the changes in soluble starch synthase (SSS), granule-bound starch synthase (GBSS) activities presented a single peak, reaching their maximums in the middle period. AGPase, SSS, and GBSS activities were all positively related to starch content. Moreover, quantitative real-time polymerase chain reaction (qRT-PCR) verified the changes in SS and SSS activities via the expression levels of the SS, SSSI, and SSSII genes. The gibberellin (GA) and zeatin riboside (ZR) content attained their maximum in the initial period of stolon formation. Indole-3-acetic acid (IAA) and abscisic acid (ABA) remained at high levels during the initial and middle period and decreased significantly during the later period of stolon formation, inversely to the ratio of ABA:IAA. Analysis of the physiological changes in T. edulis stolon indicated that the accumulation of soluble sugars and starch via various enzymes, a high level of IAA and a low ABA to IAA ratio mainly contributed to stolon development of T. edulis. This paper explored carbohydrate levels and endogenous hormones profiles during stolon formation, which provided the theory basis for further regulating stolon growth of T. edulis.

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Section: Discussionsupporting

confidence: 93%

“…DETERMINATION OF CARBOHYDRATE CONTENT. Carbohydrate content was determined colorimetrically, essentially as described earlier (Mishra and Dubey, 2013;Xia et al, 2005). Briefly, %0.5 g frozen samples were homogenized with 4 mL 80% ethanol and extracted at 80°C for 30 min, then centrifuged at 8000 g n for 20 min.…”

Section: Methodsmentioning

confidence: 99%

Dynamic Changes in Starch Metabolism and Endogenous Hormones during Stolon Formation in Tulipa edulis

Miao

Zhu

et al. 2016

J. Amer. Soc. Hort. Sci.

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“…It is well known that the plants at different growth stages are different in their ability of photosynthesis, capacity of nutrient uptake from soil by feeding roots, endogenous hormonal characteristics and changes in the reserved carbohydrates of the bulb scales (Miller, 1992(Miller, , 1993Qian and Yi, 2006;Zheng et al, 2012;Addai et al, 2011a, b;Xia et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Effect of bulb removal date on growth and flowering of Asiatic hybrid lily cv. Brunello

Asker¹

2012

Afr. J. Agric. Res.

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The objective of the present study was to investigate the effect of different bulb removal dates during plant growth on growth and flowering of Asiatic hybrid lily cv. "Brunello". The study was carried out in the nursery of Floriculture Unit, Baghdad University, Iraq, from January to April 2012. During plant growth, the bulbs were not removed (control) or removed four, six, eight and ten weeks after planting. The results revealed that buds number, flowers number, flower diameter and plant height were reduced while number of aborted buds increased when the bulbs were removed during active growth. The degree of bulb removal effect was dependent on date of bulb removal. The effect was severe when the bulbs were removed 8 weeks after planting at which time the plants were at the flower bud development; the plants were shorter and more sensitive to buds abortion and produced less flowers with smaller size compared to other treatments. It is necessary to perform further studies to clarify the relation between the bulb and plant development and to investigate the plant physiological and biochemical changes upon bulb removal during plant growth.

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“…Previous studies suggest that development of storage roots was paralleled with complex physiological activities including carbohydrate, enzyme, and hormone dynamics [2][3][4]. A wealth of studies regarding this have been conducted on bulbous owers such as lilies [5][6][7] and tulips [2,3,8], whereas freesia remains unexplored according to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

“…Soluble carbohydrates, typically sucrose, were described to be strong triggers of potato tuberization [13]. A concomitant accumulation of starch and sucrose was observed across tube and bulblet development [5,13].…”

Section: Introductionmentioning

confidence: 99%

Dynamics and Transcriptome Analysis of Starch and Sucrose Metabolism During Corm Development in Freesia Hybrida

Su-Qin

Yan

et al. 2020

Preprint

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Background Starch and sucrose metabolism plays a crucial role in the formation and development of bulbs in bulbous plants, which, however, remains unclear and unexplored in the corms of Freesia hybrida, one kind of famous bulbous flower. Herein, we investigated the dynamics of the major form of carbohydrates and related enzyme activities and profiled the transcriptome of freesia corms at four developmental stages with the aim to reveal the relation of starch and sucrose metabolism to corm development and the transcriptional regulation of this metabolic process.Results The content of starch, sucrose and soluble sugars followed an overall upward trend across the corm developmental stages. Activities of the adenosine diphosphoglucose pyrophosphorylase, starch branching enzyme and β-amylase generally followed the pattern of the starch and sucrose level. Activities of sucrose phosphate synthase increased from corm formation till the initial swelling stage and subsequently reached a plateau. Activities of invertase and sucrose synthase peaked at the later rapid swelling stage. Transcriptome analysis revealed a total of 100,999 unigenes, out of which 44,405 unigenes were annotated. Analysis based on Clusters of Orthologous Groups suggested that carbohydrate transport and metabolism (9.34% of the sequences) was prominent across the corm developmental process. Totally 3427 differentially expressed genes were identified and the enrichment analysis directed starch and sucrose metabolism a critical pathway in corm development especially at the rapid swelling stage. Genes encoding key carbohydrate-metabolizing enzymes were identified and their differential expression related to corm development was explored.Conclusions The comparative transcriptome analysis discloses essential roles of starch and sucrose metabolism and the genetic mechanism related to the corm development. The results construct a valuable resource pool for further molecular-level studies, which are helpful for metabolic regulation of carbohydrates and improvement in molecular breeding of Freesia hybrida.

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Studies on the Bulb Development and Its Physiological Mechanisms in Lilium Oriental Hybrids

Cited by 10 publications

References 5 publications

Dynamic Changes in Starch Metabolism and Endogenous Hormones during Stolon Formation in Tulipa edulis

Dynamic Changes in Starch Metabolism and Endogenous Hormones during Stolon Formation in Tulipa edulis

Effect of bulb removal date on growth and flowering of Asiatic hybrid lily cv. Brunello

Dynamics and Transcriptome Analysis of Starch and Sucrose Metabolism During Corm Development in Freesia Hybrida

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